Contents Xu-Feng Liu and Hao-Qi Gao Polyhedron 65 (2013) 1 Reactions of mixed-metal dicobaltã iron cluster (ö¥ 3 -S)FeCo 2 (CO) 9 with diphosphine ligands Four mixed-metal dicobalt–iron cluster complexes [(l 3 -S)FeCo 2 (CO) 8 ] 2 (Ph 2 PCH 2 CH 2 PPh 2 )(1), (l 3 -S)FeCo 2 (CO) 7 (Ph 2 PCH 2 CH 2 PPh 2 ) (2), (l 3 -S)FeCo 2 (CO) 7 (Ph 2 PCH@ CHPPh 2 )(3) and (l 3 -S)FeCo 2 (CO) 7 (Ph 2 PCH 2 PPh 2 ) (4) bearing bridging or chelating diphosphine ligands were prepared by reac- tions of complex (l 3 -S)FeCo 2 (CO) 9 with Ph 2 PCH 2 CH 2 PPh 2 , cis-Ph 2 PCH@CHP Ph 2 or Ph 2 PCH 2 PPh 2 . The new complexes were characterized by elemental analysis, spec- troscopy, and single-crystal X-ray diffraction analysis. S Co Fe Co CO CO CO CO OC CO OC CO OC A cis-Ph2PCH=CHPPh2 S Co Fe Co CO CO CO P OC CO OC P OC Ph2 Ph2 3 Monami Maiti, Santarupa Thakurta, Dipali Sadhukhan, Guillaume Pilet, Georgina M. Rosair, Aline Nonat, Loïc J. Charbonnière and Samiran Mitra Polyhedron 65 (2013) 6 Thermally stable luminescent zinc–Schiff base complexes: A thiocyanato bridged 1D coordina- tion polymer and a supramolecular 1D polymer Two new Zn II complexes chelated by potentially hexadentate N 2 O 4 donor Schiff bases and thiocyanato ligands have been synthesized and characterized by spectro- scopic techniques as well as single crystal X-ray diffraction analysis. In one complex (1) the dinuclear cores are interconnected by SCN ) ligands to form 1D polymer but in another (2) SCN ) behaves only as terminal ligand. The complexes are thermally stable enough to be used as a luminescent probe. Farid Hajareh Haghighi, Hassan Hadadzadeh, Farivash Darabi, Zahra Jannesari, Malihe Ebrahimi, Taghi Khayamian, Mona Salimi and Hadi Amiri Rudbari Polyhedron 65 (2013) 16 Polypyridyl Ni(II) complex, [Ni(tppz) 2 ] 2+ : Struc- ture, DNA- and BSA binding and molecular modeling The mononuclear Ni(II) complex, [Ni(tppz) 2 ] 2+ , has been prepared and char- acterized. The interaction of the complex with DNA and BSA has been investigated. The results have indicated that the com- plex binds to DNA by three biding modes. The molecular docking of the complex with DNA suggests two binding modes. The molecular modeling has indicated that the binding mode of the complex to BSA is of hydrophobic forces and hydrogen bond interaction. Elsevier Ltd. Polyhedron 65, 28 November 2013 Contents lists available at SciVerse ScienceDirect Polyhedron journal homepage: www.elsevier.com/locate/poly
Transcript
Contents
Xu-Feng Liu and Hao-Qi Gao
Polyhedron 65 (2013) 1
Reactions of mixed-metal dicobaltã iron cluster(ö¥3-S)FeCo2(CO)9 with diphosphine ligands
Four mixed-metal dicobalt–iron clustercomplexes [(l3-S)FeCo2(CO)8]2(Ph2PCH2
CH2PPh2) (1), (l3-S)FeCo2(CO)7(Ph2PCH2CH2
PPh2) (2), (l3-S)FeCo2(CO)7(Ph2PCH@CHPPh2) (3) and (l3-S)FeCo2(CO)7(Ph2PCH2
PPh2) (4) bearing bridging or chelatingdiphosphine ligands were prepared by reac-tions of complex (l3-S)FeCo2(CO)9 withPh2PCH2CH2PPh2, cis-Ph2PCH@CHP Ph2 orPh2PCH2PPh2. The new complexes werecharacterized by elemental analysis, spec-troscopy, and single-crystal X-ray diffractionanalysis.
S
Co
Fe Co
CO
CO
COCOOC
COOC
COOC
A
cis-Ph2PCH=CHPPh2
S
Co
Fe Co
CO
CO
COPOC
COOC
POC
Ph2
Ph2
3
Monami Maiti, Santarupa Thakurta,Dipali Sadhukhan, Guillaume Pilet,Georgina M. Rosair, Aline Nonat,Loïc J. Charbonnière and Samiran Mitra
Polyhedron 65 (2013) 6
Thermally stable luminescent zinc–Schiff basecomplexes: A thiocyanato bridged 1D coordina-tion polymer and a supramolecular 1D polymer
Two new ZnII complexes chelated bypotentially hexadentate N2O4 donor Schiffbases and thiocyanato ligands have beensynthesized and characterized by spectro-scopic techniques as well as single crystalX-ray diffraction analysis. In one complex(1) the dinuclear cores are interconnectedby SCN) ligands to form 1D polymer but inanother (2) SCN) behaves only as terminalligand. The complexes are thermally stableenough to be used as a luminescent probe.
Polypyridyl Ni(II) complex, [Ni(tppz)2]2+: Struc-ture, DNA- and BSA binding and molecularmodeling
The mononuclear Ni(II) complex,[Ni(tppz)2]2+, has been prepared and char-acterized. The interaction of the complexwith DNA and BSA has been investigated.The results have indicated that the com-plex binds to DNA by three biding modes.The molecular docking of the complex withDNA suggests two binding modes. Themolecular modeling has indicated that thebinding mode of the complex to BSA is ofhydrophobic forces and hydrogen bondinteraction.
Elsevier Ltd.
Polyhedron 65, 28 November 2013
Contents lists available at SciVerse ScienceDirect
Ni(II), Cu(II) and Zn(II) complexes of (Z)-N¢(1,3,4-thiadiazol-2-yl) acetimidate: Synthesis,spectral, solid state electrical conductivity,X-ray diffraction and DFT study
Three new complexes [Ni(tha)2] (1), [Cu(tha)2] (2)and [Zn(tha)2] (3) have been prepared from in situgenerated new ligand (Z)-N¢(1,3,4-thiadiazol-2-yl) acetimidate (tha) in a single pot reactionbetween metal acetate and 2-amino-1,3,4-thia-
diazole. In the complexes, the newly generatedligand is bonded through thiadiazole ring nitro-gen and oxygen of acitimidate group, thus actingas N, O bidentate ligand producing a six mem-bered chelate ring. The complexes show semi-conducting properties due to the presence ofvarious types of p–p interactions which alsocontribute to stabilize the crystal structures. Thegeometry optimization has been performed usingDFT method and geometrical parameters thusobtained for the complexes have been comparedwith their crystal structures. The molecularelectrostatic potential (MEP) and contour mapsof ligand and the complexes are also calculated byDFT method.
Snezana Rajkovic, Darko P. Ašanin,Marija D. Zivkovic and Miloš I. Djuran
Polyhedron 65 (2013) 42
Synthesis of different pyrazine-bridged platinu-m(II) complexes and 1H NMR study of theircatalytic abilities in the hydrolysis of theN-acetylated LL-methionylglycine
This work deals with synthesis and spec-troscopic characterization of differentpyrazine-bridged {[Pt(L)Cl]2(l-pz)}Cl2complexes (L is a chelating diamine li-gand). The chlorido complexes were con-verted into the corresponding aqua speciesand 1H NMR spectroscopy was applied tostudy their catalytic abilities in the hydro-lysis of the N-acetylated LL-methionylgly-cine.
Pt
H2N
NH2
NN
Pt
NH2
H2N
2+
Cl Cl
L L
(L = en, 1,2-pn, ibn or dach)
HN C
O
S
H3C
NH
OH
O
H3C
O
Chandan Adhikary, Sourajit Banerjee,Jishnunil Chakraborty and Sandra Ianelli
Copper(II) azido complexes containing tri-dentate Schiff-base (NNO) coligands havebeen synthesized and characterized bysingle crystal X-ray crystallography. Olefinepoxidation reactions catalyzed by thesecomplexes in different solvent media havebeen studied using tert-BuOOH as theoxidant. The antimicrobial activity of thecomplexes has also been investigated.
Raisa I. Maksimovskaya
Polyhedron 65 (2013) 54
Molybdophosphate heteropoly blues: Electron-transfer reactions in aqueous solutions asstudied by NMR
Reduction of heteropolyacid H3[PMo12O40]has been studied by 31P NMR in its diluteaqueous solutions. The rate constants ofthe intermolecular electron transfer be-tween differently reduced species havebeen estimated from their NMR line widthsand intensities.
Iso-valence Co(II) and mixed-valence Co(II/III)tetranuclear complexes: Synthesis, structure,magnetic properties and DFT study
Iso-valence Co(II) and mixed-valence Co(II/III) tetranuclear complexes have beensynthesized using N4O3 coordinating hep-tadentate ligand. The complexes are iso-lated and characterized by X-ray andspectroscopic measurements. Magneticmeasurements show antiferromagnetic in-teraction for iso-valence Co(II) complexwhile exchange coupling in the mixedvalence Co(II/III) complex is insignificant.DFT study is used to justify exchangepathways for iso-valence Co(II) complex.
= Cobalt = Oxygen = Nitrogen
OHN N
OHN N
HO
Co(ClO4)2.6H2O+
CH3OHCH3OH
NaN3 Et3N
Yasemin Kurt, Berat _Ilhan-Ceylan,Muhammed Ac�ıkgöz, Elif Tüzün,Gülten Atun and Bahri Ülküseven
Polyhedron 65 (2013) 67
N2O2-complexes of oxovanadium(IV) with 2,2¢-dihydroxybenzophenone thiosemicarbazones:Synthesis, EPR and electrochemical studies
2,2¢-Dihydroxybenzophenone S-alkyl thio-semicarbazones (alkyl: methyl, propyl andallyl) and their oxovanadium(IV) chelateswere synthesized. The solid complexes inthe general formula [VO(L)] were charac-terized by elemental analysis, magneticmeasurements, IR, UV–Vis and EPR spec-troscopy.
N1
N
N4
S
O
R
OV
O
OHOHC
OH+
VOSO4
-H2SO4, -H2OOH N1
NN4H2
S
OH
R
Pooja Singh, Ashish K. Singh andVinod P. Singh
Polyhedron 65 (2013) 73
Synthesis, structural and corrosion inhibitionproperties of some transition metal(II) com-plexes with o-hydroxyacetophenone-2-thio-phenoyl hydrazone
Transition metal(II) complexes witho-hydroxyacetophenone-2-thiophenoylhydrazone were synthesized andcharacterized by various spectral techni-ques. The molecular structure of ligand andits Mn(II) complex are determined bysingle crystal X-ray crystallography. Thecomplexes showed greater corrosioninhibition efficiency than free ligand.
Iwona B. Szymanska
Polyhedron 65 (2013) 82
Influence of the gas phase composition on theproperties of bimetallic Ag/Cu nanomaterialsobtained via chemical vapor deposition
The carboxylate compounds [Ag(l-O2-CC2F5)]n and [Cu(VTMS)(l-O2CC2F5)]m
were used as precursors in chemical vapordeposition (CVD) for the preparation ofAg/Cu nanomaterials. The bimetallic[AgCu(O2CC2F5)2] carboxylate was formedin the gas phase and affected the growth ofthe rods and large copper grains on thesilver surface.
vi Contents
Timothy J. Boyle, Michael L. Neville,Christopher A. Apblett, Sarah M. Hoppeand Milan Gembicky
Polyhedron 65 (2013) 89
Synthesis of a family of lithium iron doublearyloxide precursors for production of LiFeO2
nanomaterials
A family of lithium iron double aryloxideswere synthesized, characterized, and in-vestigated for use as precursors to LiFeO2
nanomaterials. These were identified as[Fe((l-OAr)2Li(solv)2)2] (OAr = oPP: solv =THF (1), py (2); DMP/THF (3)) and
[Li(THF)4][Fe(DBP)3] (4). Nanomaterialswere identified as LiFeO2.
Effect over the electronic structure by changingthe core metals from Mo to W in a family of[Mo6)nWnCl8F6]2) (n = 0–6) clusters
A complete theoretical characterization ofa family of [Mo6)nWnCl8F6]2) clusterswhere n = 0–6, was performed. The UV–Vis transitions are tuned and displaced tohigher wavelength by the mixture of Moand W atoms.
Fatma B. Alhanash, Nicholas A. Barnes,Stephen M. Godfrey, Rana Z. Khan andRobin G. Pritchard
Polyhedron 65 (2013) 102
Generation of a high symmetry 2D-polybro-mide network in the structure of {[(o-SCH3C6-H4)3PBr][Br]Æ0.5(l-Br2)3}n. The templating effectof the C3 symmetric [(o-SCH3C6H4)3PBr]+ cation
The structure of the first compound ofR3PBr5 stoichiometry has been elucidatedand shown to be the unusual salt, {[(o-SCH3C6H4)3PBr][Br]Æ0.5(l-Br2)3}n. Thestructure consists of a high symmetry (C3)cation which acts as a template around a C3
symmetric 2D polybromide network. Thispolymeric network is built up of 18-membered hexagonal rings consisting ofsix bromide anions and six dibrominemolecules.
P1
Br1
Br2
Br3
Br3iiBr3i
Br3 iii
Br3
Br3 iv
S1ii
S1
S1iC1i
C1ii
C1
C7
C2
C3
C4 C5
C6
Pavel S. Koroteev,Zhanna V. Dobrokhotova,Andrey B. Ilyukhin, Nikolay N. Efimov,Denis I. Kirdyankin, Aleksandr V. Tyurin,Yury A. Velikodny, Maksim L. Kovba andVladimir M. Novotortsev
Polyhedron 65 (2013) 110
Lanthanide cymantrenecarboxylate complexeswith an Ln:Mn ratio of 1:2 as precursors forLnMn2O5 phases. Synthesis, structure, physico-chemical properties, and thermal decomposi-tion
Novel 3d–4f heterometallic binuclear com-plexes, [Ln2(l-OOCCym)4(g2-NO3)2(g2-DME)2], where Ln = Pr, Eu, Gd, Tb, Dy, Ho,Er, Yb, Cym = (g5-C5H4)Mn(CO)3, andDME = CH3OCH2CH2OCH3, and trinuclearcomplex [Yb3(l-O,g2-OOCCym)2(l2-OOC-Cym)4(g2-NO3)3(g2-DME)2(H2O)2] weresynthesized and characterized by X-raydiffraction and various physical methods.Thermal decomposition of the complexesin air affords pure LnMn2O5 phases. Themagnetic properties of LnMn2O5 phases(Ln = Gd, Ho) prepared by thermolysis ofthe corresponding precursors were studied.
viiContents
C. Rajnák, J. Titiš, I. Šalitroš, R. Boca,O. Fuhr and M. Ruben
Polyhedron 65 (2013) 122
Zero-field splitting in pentacoordinate Co(II)complexes
Pentacoordinate Co(II) complexes posses-sing the {CoN3X2} chromophore (X = Cl, O)have been synthesized and structurallycharacterized. The magnetic data confirmhigh magnetic anisotropy expressedthrough the axial zero-field splitting para-meter D/hc = 50–70 cm)1. These values liebetween those found in tetracoordinateand hexacoordinate Co(II) complexes.
T/K
0 50 100 150 200 250 300
μ eff/μ
B
0
1
2
3
4
5
B/T
0 1 2 3 4 5 6 7
Mm
ol/(N
AμB)
0
1
2
3
Xu Huang, Zhong-Feng Li, Qiong-Hua Jin,Qi-Ming Qiu, Yang-Zhe Cui andQin-Rui Yang
Polyhedron 65 (2013) 129
From dinuclear, chain to sheet: Synthesis,structural characterization and luminescenceproperties of silver(I) complexes based on rigidand flexible pyridyl-containing ligands
Five silver(I) complexes based on rigid andflexible pyridyl-containing ligands havebeen synthesized and characterized byelemental analysis, X-ray diffraction, 1HNMR and fluorescence spectroscopy.
Maliheh Mousavi, Virginie Béreau,Carine Duhayon and Jean-Pascal Sutter
Polyhedron 65 (2013) 136
Tri- and pentanuclear NCS-bridged [MoIII–CuII]cluster compounds: Crystal structures andmagnetic properties
Two discrete NCS-bridged heterometallicMoIII–CuII compounds have been obtainedfrom 4d-metallo-ligand [Mo(NCS)6]3) anda [Cu(3,3,3-tet)]2+ units. Reaction condi-tions allow directing the assembling toeither a tri- or a pentanuclear cluster.Structures and magnetic behaviors arereported.
Xiao-Jie Chen, Yan Yang, Wei-Wei He andJian-Fang Ma
Polyhedron 65 (2013) 141
Divalent copper and zinc complex based on anew 4,4¢-bis-[(dicarboxymethyl)aminomethyl]-biphenyl and N-donor ligands: Syntheses, struc-tures and photoluminescence
Seven copper(II) and zinc(II) coordinationcompounds based on the H4L ligand anddifferent N-donor ligands have been pre-pared, and the luminescent properties for5–7 have been studied in solid state atroom temperature.
Binuclear samarium(III) pivalates with chelat-ing N-donors: Synthesis, structure, thermalbehavior, magnetic and luminescent properties
Two new polymorphs of the same compo-sition (bath)2Sm2(piv)6Æ2EtOH and the pro-duct their high-temperature solid-statedesolvation (bath)2Sm2(piv)6 were ob-tained and studied by X-ray diffractionand physicochemical methods.
Sheng-Di Bai, Rui-Qin Liu, Tao Wang,Fei Guan, Yan-Bo Wu, Jian-Bin Chao,Hong-Bo Tong and Dian-Sheng Liu
Polyhedron 65 (2013) 161
An alkyl-ended ansa-bis(amidine) and solvent-influenced complexation modes of its group IVmetal derivatives
Diverse complexation modes could beobserved in group IV complexes supportedby tBu-ended ansa-bis(amidine) Si-Me2[N(H)C(Ph)N(tBu)]2. Two differentforms were crystallized from dichloro-methane and toluene, respectively. Thetransformation was driven by the differentpolarity of the solvents. With methylalu-minoxane, some complexes were active incatalyzing ethylene polymerization.
A. Bharti, P. Bharati, Ram Dulare,M.K. Bharty, Dheeraj K. Singh andN.K. Singh
Polyhedron 65 (2013) 170
Studies on phenylmercury(II) complexes ofnitrogen–sulfur ligands: Synthesis, spectral,structural characterization, TD-DFT and photo-luminescent properties
The reactions of phenylmercury(II) acetate with N-phenyl-5-(pyridin-4-yl)-1,3,4-thiadiazol-2-amine(Hppt) (1) and potassium N(4-methylpiperazine)-1-carbodithioate [K(mpcdt)] yielded [PhHg(ppt)](2) and [PhHg(mpcdt)] (3). The most noteworthy
feature in complex 2 is that the ligand boundphenylmercury cation is stabilized via intramole-cular as well as intermolecular weak Hg� � �Nsecondary interactions. The crystal structure ofcomplex 3 is stabilized by intermolecular/intramo-lecular Hg� � �S interactions and a weak intermole-cular C–H� � �N interaction. The ligands Hppt and[K(mpcdt)] exhibited green emissions and complex2 shows photoluminescence due to the presence ofHg� � �N interactions, whilst complex 3 does notshow photoluminescence, because of Hg� � �S inter-actions which shows a quenching behaviour in thesolid state. The electronic excitation energies andintensities of the six lowest-energy spin allowedtransitions were calculated using time dependentdensity functional theory (TD-DFT).
Jesús Sanmartín-Matalobos,Cristina Portela-García,Ana M. García-Deibe, Matilde Fondo andLucía Briones-Miguéns
Polyhedron 65 (2013) 181
Tuning the ring-chain tautomerism of a tetra-hydroquinazoline/Schiff base system with un-expected methanol oxidation
We have demonstrated that the ring-chaintautomerism of a tetrahydroquinazoline/Schiff base (H2Lring/H2Lchain) system can becontrolled by cadmium and cobalt coordi-nation through varying ligand stoichiome-try. Besides, this investigation revealed theunexpected cobalt-mediated aerobic oxi-dation of methanol to formaldehyde.
ixContents
Pablo Martín-Ramos, Micael D. Miranda,Manuela Ramos Silva, M. ErmelindaS. Eusebio, Víctor Lavín andJesús Martín-Gil
Polyhedron 65 (2013) 187
A new near-IR luminescent erbium(III) complexwith potential application in OLED devices
The synthesis and structural elucidation ofa new [Er(b-diketonate)3(N,N-donor)] oc-tacoordinated complex are reported, to-gether with calorimetric, FTIR and Ramanspectroscopy data and photoluminescentcharacterization of the material. A signifi-cant energy transfer by antenna effect fromthe coordinating ligands to the centralEr(III) ion has been confirmed. A potentialuse of the compound as a NIR emittingmaterial in organic light-emitting devices(OLEDs) is envisaged.
Shantanu Hazra, Subrata Naiya,Biswarup Sarkar, Michael G.B. Drew andAshutosh Ghosh
Polyhedron 65 (2013) 193
Structural variations in self-assembled coordi-nation polymers constructed by some carbox-ylate bridged di-copper(II) nodes andhexamethylenetetramine spacers
Synthesis and structural characterizationof four new copper(II)-hexamethylenete-tramine (hmt) complexes with isomeric 2-,3-, 4-nitrobenzoates and phenylacetatereveal that one of them is a 1D zigzagchain, two are 2D polymers with fusedhexagonal rings and the remaining one is avery rare example of a self-assembleddiamondoid 3D coordination polymer.
Synthesis and equilibrium study of nickel(II),copper(II), and zinc(II) complexes withN,N¢,N00 ,N00¢,N00 00 ,N00 00¢-hexakis(2-aminoethyl)-1,4,7,10,13,16-hexaazacyclooctadecane in an aqu-eous solution
The synthesis and characterization of anew, fully functionalized hexaaza macro-cycle ligand are described. The complexa-tion of transition metal ions wasinvestigated by means of potentiometrictitration, and the estimated structure of thecomplexes formed with metal ions isdiscussed.
Armaáan Gû¥nsel, Sevgi Gû¥ney andMehmet Kandaz
Polyhedron 65 (2013) 206
Gemini-type 1(4),8(11)-15(18),22(25)-fluorop-robe attached as macrocyclically electrovalentmononuclear and bunk-type dinuclear phthalo-cyanines
The new gemini designed 1(4),8(11)-15(18),22(25)-fluor-oprobe attached macrocyclically electrovalent mononuc-lear [(Co(II) (2a), Mn(III) (3a)] and bunk-type (dimer)electrovalent dinuclear [(Co(II) (2b), Mn(III) (3b)] phtha-locyanines have been synthesized at the same time fromthe corresponding 3,3ã -(1,1ã -((4-methoxyphenyl)-methylene) bis(naphthalene-2,1-diyl))bis(oxy)-diphtha-
lonitrile (1). FTIR, 1H NMR, 13C NMR, UVã Vis, MALDI-TOF/MS spectral, magnetic susceptibility and elementalanalysis data have been used to characterize the novelcompounds. The spectroscopic properties of the com-plexes, which are organo-soluble, are affected strongly bythe fluorescent units on the periphery of the phthalocya-nines. The fluorescence quantum yield was affected bythe molecular structures of the mono and dinuclearmanganese phthalocyanines (3a and 3b), and this isdiscussed. It was found that cage effects diminished thefluorescence quantum yield of the phthalocyanine struc-ture. The redox behavior of the complexes was examinedby voltammetry on Pt in DMSO/TBAP. The electrochemi-cal measurements showed the formation of pronounced-valence oxidation and reduction species with potentialshifts.
N
NN
N
N
N
N
NMO
O
O
O
OO
N
NN
NN
NN
NM OOOO
N
NN
NN
NNM
OOOO
O
O
O
O
N
M=Co (2a)M=Mn (3a)
M=Co (2b)M=Mn (3b)
x Contents
Carolina V. Barra, Fillipe V. Rocha,Arnaud Gautier, Laurent Morel,Marcela B. Quilles, Iracilda Z. Carlos,Oswaldo Treu-Filho, Regina C.G. Frem,Antonio E. Mauro and Adelino V.G. Netto
Polyhedron 65 (2013) 214
Synthesis, cytotoxic activity and DNA interac-tion of Pd(II) complexes bearing N¢-methyl-3,5-dimethyl-1-thiocarbamoylpyrazole
A new series of complexes of generalformulae [PdX2(tmdmPz)] {X = Cl (1), Br(2), I (3), SCN (4); tmdmPz = N¢-methyl-3,5-dimethyl-1-thiocarbamoylpyrazole}have been synthesized and characterizedby elemental analysis, molar conductiv-ities, IR, 1H and 13C{1H} NMR spectroscopy.Complexes 1–4 were more active thancisplatin against LM3 and LP07 cell lines.The complexes coordinate to guanosinethrough N7and all of them modify theDNA tertiary structure.
Ara Núñez-Montenegro, Rosa Carballo,Ulrich Abram andEzequiel M. Vázquez-López
Polyhedron 65 (2013) 221
Preparation and characterization of rhenium(I)complexes with thiosemicarbazone ligands de-rived from resorcinol
New neutral tricarbonylrhenium(I) com-plexes with bidentate thiosemicarbazoneligands derived from resorcinol have beenprepared. The Re(I) metal centers arecoordinated through the azomethine nitro-gen and the sulfur atoms establishing five-membered chelate rings (j-S,N(3)). Thedeprotonation of the ligand HL6 producesthe labilization of the halogen and theformation of the dimeric complex [Re2(-L6)2(CO)6] by Re–S–Re bridges, where S isthe thiolate sulfur atom from a j-S,N(3)-bidentate thiosemicarbazonate ligand.
Syntheses and characterizations of square pla-nar nickel(II) complexes with pendant ligands:Examples of bi-dentate bonding modes ofpotentially tri- and tetra-dentate Schiff bases
Four square planar nickel(II) complexeshave been synthesized and characterized.A potential tridentate and two potentialtetradentate Schiff bases are behaving aspendant ligands. H-bonding, C–H� � �p andp� � �p interactions form supramolecularassembly of the molecular building blocks.
Alina S. Dinca, Julia Vallejo, Sergiu Shova,Francesc Lloret, Miguel Julve andMarius Andruh
Polyhedron 65 (2013) 238
Synthesis, crystal structure and magnetic prop-erties of a new [ZnII
6DyIII6] dodecanuclear motif
A new dodecanuclear complex, [ZnII6DyIII
6],has been assembled using a supramolecu-lar compartmental ligand, each DyIII ionfrom this motif behaving as a single ionmagnet.
xiContents
B. Raditzky, S. Sachs, K. Schmeide,A. Barkleit, G. Geipel and G. Bernhard
Polyhedron 65 (2013) 244
Spectroscopic study of americium(III) com-plexes with nitrogen containing organic modelligands
For the first time, the complex formation ofAm(III) with various nitrogen containinghumic acid model ligands (anthranilic acid,picolinic acid) was studied. With all ligandsAm(III) complexes could be identified.Spectroscopic characteristics, stability con-stants as well as stoichiometries of theformed complexes were determined.
Picolinic acid(Pic)
Am3+ +
492 498 504 510 516 522 528
0.0000
0.0006
0.0012
0.0018
0.0024
0.0030 Am(III) standard Am(III)-Pic, pH 3.8 Am(III)-Pic, pH 6.0
abso
rban
ce
wavelength (nm)
503.3 nm
504.0 nm508.1 nm
λmax
0 25 50 75 100 125 150 175 200
10 5
10 6
Am(III) standard Am(III)-Pic, pH 3.8 Am(III)-Pic, pH 6.0
rel.
inte
nsity
delay time (ns)
N
COOH
Madhusudan Nandy,Sambuddha Banerjee, Corrado Rizzoli,Ennio Zangrando, Aline Nonat,Loïc J. Charbonnière and Samiran Mitra
Polyhedron 65 (2013) 252
Syntheses, structural diversity and photo-phy-sical properties of copper(I) and silver(I) co-ordination polymers based on the pyridine-4-amidoxime ligand
The ligating properties of pyridine-4-ami-doxime have been explored to synthesizecopper(I) and silver(I) polymeric com-plexes, which are characterized by differ-ent spectroscopic methods and singlecrystal X-ray crystallography. Fluorescencestudies of the ligand and its complexes inthe solid state show interesting results.
Komal M. Vyas, R.N. Jadeja, Dipak Patel,R.V. Devkar and Vivek K. Gupta
Polyhedron 65 (2013) 262
A new pyrazolone based ternary Cu(II) com-plex: Synthesis, characterization, crystal struc-ture, DNA binding, protein binding and anti-cancer activity towards A549 human lungcarcinoma cells with a minimum cytotoxicityto non-cancerous cells
The synthesis of a new ternary complex[Cu(TMCPMP-TS)(Phen)], with its crystalstructure, has been reported. DNA binding,protein binding and anti-cancer studies ofthe complex has been carried out.
Daniela Belli Dell�Amico, Luca Labella,Fabio Marchetti, Piero Mastrorilli,Simona Samaritani and Stefano Todisco
Polyhedron 65 (2013) 275
Oxidation by dioxygen of manganese(II) andiron(II) complexes
The iron(II) N,N-dialkylcarbamato com-plexes [Fe(II)(O2CNR2)2]n (R = Et, iPr) andFe(II)8(l4-O)2(O2CNiPr2)12 were oxidised bydioxygen to the corresponding iron(III)derivatives. On the other hand, the man-ganese(II) derivatives [Mn(II)(O2CNR2)2]n
(R = Et, iPr) did not react with O2. Never-theless, Mn(II)8(l4-O)2(O2CNiPr2)12 wasoxidised by O2 to [Mn(III)4(O)3(O2C-NiPr2)6]y. The product of partial oxidation,[Mn(II)6Mn(III)2(l4-O)2(l3-O)(O2CNiPr2)12],has been characterised by X-ray diffractionmethods.
xii Contents
A. Demir, R. Topkaya and A. Baykal
Polyhedron 65 (2013) 282
Green synthesis of superparamagnetic Fe3O4
nanoparticles with maltose: Its magnetic in-vestigation
Superparamagnetic iron oxide nanoparticles (SPIONs)have been successfully synthesized through a simpleand facile hydrothermal reduction route using a singleiron precursor (FeCl3Æ6H2O), and a combination of theinherent chemical reduction capability of maltose decom-position products (glucose as a reducing sugar) and itsacid (gluconic acid as a capping agent). Magnetizationmeasurements indicate that the Fe3O4 nanoparticles aresuperparamagnetic at room temperature and ferromag-
netic at low temperatures. From zero-field cooled andfield cooled magnetization measurements, the blockingtemperature (TB) of the Fe3O4 nanoparticles was deter-mined as being 74 K. The lower reduced remanentmagnetization (Mr/Ms) values than the theoretical valueof 0.5 showed that the Fe3O4 nanoparticles have uniaxialanisotropy, according to the Stoner–Wohlfarth model.The effective magnetic anisotropy constant (Keff) iscalculated to be about 0.49 · 106 erg/cm3, which ishigher than that of bulk Fe3O4. The observed negligiblecoercivity and remanence magnetization demonstratedthat the Fe3O4 NPs synthesized by the green method inthis study have superparamagnetic behaviour at roomtemperature. They display potential applications inbiomedicine.
Sylwia Godlewska, Julia Jezierska,Katarzyna Baranowska, Ewa Augustinand Anna Dołezga
Polyhedron 65 (2013) 288
Copper(II) complexes with substituted imida-zole and chlorido ligands: X-ray, UV–Vis, mag-netic and EPR studies and chemotherapeuticpotential
New copper(II) complexes with chlorideanions and alkyl imidazoles are structu-rally and spectroscopically characterized insolid state and methanolic solutions. Thecomplexes show different coordinationpolyhedra in solid state but adopt similargeometries in solution. The cytotoxic activ-ities of these compounds against leukemiaU937 are evaluated.
Xiaohong Chen, Rong Jin, Quan Du,Hao Feng, Yaoming Xie and R. Bruce King
Polyhedron 65 (2013) 298
Iron–iron bonding versus iron–phosphorusbonding in binuclear diphosphacyclobutadieneiron carbonyl complexes
The lowest energy (Me2C2P2)2Fe2(CO)5
structure has a bridging g1,g4-Me2C2P2
ring and no iron–iron bond. The lowestenergy singlet and triplet (Me2C2P2)2Fe2(-CO)4 structures have at least one bridgingg1,g4 ligand. However, the lowest energystructures for (Me2C2P2)2Fe2(CO)3 haveonly terminal g4-Me2C2P2 ligands, threebridging carbonyl groups, and an FeBFetriple bond.
Sari M. Närhi, Kaisa Malo,Raija Oilunkaniemi and Risto S. Laitinen
Polyhedron 65 (2013) 308
Tetrahydrofuran ring opening and unexpectedoxidation of the furyl ring in the reaction ofbis(2-furyl) ditelluride with iodine and triphe-nylphosphine
The reaction of bis(2-furyl) ditellurideFu2Te2 with iodine and Ph3P yields amixture of products. The main productsare {PPh3(C4H5O2)}2[TeI4], {Ph3P(CH2)4-PPh3}[TeI4]Æ2CH2Cl2, Fu2Te, (CH2)4TeI2,Ph3PO, and Te indicating THF ring opening,abstraction of tellurium by PPh3, and theconversion of the furyl ring in FuTeI into alactone ring.
xiiiContents
G.S. Sivagurunathan, K. Ramalingam andC. Rizzoli
Polyhedron 65 (2013) 316
Nanothallium(III) sulfide from dithiocarbamateprecursors: Synthesis, single crystal X-raystructures and characterization
Spherical nano Tl4S3 which is stable up to300 �C was formed from Tl(chmdtc)3,Tl(chedtc)3 and Tl(dchdtc)3 and was char-acterized by PXRD, TEM, SAED. The ease offormation was the highest for Tl(dchdtc)3.Single crystal X-ray structures show thelongest Tl–S and C–N bonds for Tl(dchdtc)3.
Saptarshi Biswas and Ashutosh Ghosh
Polyhedron 65 (2013) 322
Use of Cu(II)-di-Schiff bases as metalloligands inthe formation of complexes with Cu(II), Ni(II)and Zn(II) perchlorate
Formation of two linear (Cu3 and ZnCu2),two bent (NiCu2), two triangular (NiCu2)and one novel star-shaped ZnCu3 com-plexes by the reaction of perchlorate saltsof metal ions (e.g. Ni(II), Cu(II) and Zn(II))with Cu(II)-di-Schiff bases as metalloli-gands show that neuclearity and shape ofcomplexes depend upon the central metalion, metalloligands as well as coordinationsolvents.
Sergey P. Babailov, Eugeny N. Zapolotskyand Eduard S. Fomin
Polyhedron 65 (2013) 332
Molecular structure and paramagnetic proper-ties of bis-diisobutyl-dithiophosphinate com-plexes of neodymium(III), europium(III) andytterbium(III) with 1,10-phenanthroline usingNMR
The molecular structure and NMR thermo-sensor properties of Ln-containing complexeswith the dithiophosphinate and 1,10-phenan-throline ligands {where Ln = Nd3+, Eu3+, Yb3+
and Lu3+} in CDCl3 have been studied by 1HNMR techniques.Coordination compound investigated in thepaper represents new type of thermometricNMR sensors.
The Publisher encourages the submission of articles in electronic form thus saving time and avoiding rekeying errors. Fordetailed instructions on the preparation of manuscripts and of electronic artwork, consult the Author Gateway for Elsevier athttp://authors.elsevier.com
ScienceDirectFull text of this journal is available, on-line from ScienceDirect. Visit www.sciencedirect.com for more information.
