Contents
Poulami Pattanayak, Sankar Prasad Parua,Debprasad Patra, Jahar Lal Pratihar,Paula Brandão, Vitor Felix andSurajit Chattopadhyay
Polyhedron 70 (2014) 1
Synthesis, characterizations and structure oforthometallated Pt(II) and Pt(IV) complexes:Oxidative addition to C,N,N,O coordinated Pt(II)complexes
Newly prepared orthometallated complexesof Pt(II) underwent facile oxidative additionwithout breakage of Pt–C bond. The strategyis fascinating in terms of the synthesis oforthoplatinated Pt(IV) complex.
NNN
OPt
NNN
OPt
I
I
Mohammad Hayatifar, Fabio Marchetti,Guido Pampaloni and Stefano Zacchini
Polyhedron 70 (2014) 6
Reactions of TaF5 with activated arenes. Synth-esis of [4-(OH)-3-(OCH3)C6H3CH(@O•H)][4-(OH)-3-(OCH3)C6H3CHO][TaF6], a rare exampleof protonated aldehyde
The protonated aldehyde salt [4-(OH)-3-(OCH3)C6H3CH(@O•H)][4-(OH)-3-(OCH3)C6H3CHO][TaF6] was isolated in the solidstate by the reaction of vanillin withTaF5 in dichloromethane and structurallycharacterized.
TaF5
CHO
MeO
HO
[TaF6]
MeO
HO CHO
HO
CH
OMe
OHCH2Cl2, r.t.
Prateeti Chakraborty, Sandip Mondal,Sudhanshu Das, Atish Dipankar Jana andDebasis Das
Polyhedron 70 (2014) 11
Dicyanamide mediated construction of 1D poly-meric networks of quinoxaline with d10 metalions: Synthesis, thermogravimetric analysis,photoluminescence and a theoretical investiga-tion on the p� � �p interactions
The interaction of quinoxaline withM(OAc)2 [where M = Zn(II), Cd(II) andHg(II)] in the presence of the spacerdicyanamide generates one-dimensionalcoordination polymers. Although the metalions have no influence in making thestructural motifs, they play a crucial rolein controlling the luminescence propertiesof the complexes.
350 400 450 500 550 600
50
100
150
200
2
3
Em
issi
on in
tens
ity (
a.u)
Wavelength (nm)
1
Fluorescence efficiency order : Zn(II)> Cd(II) > Hg(II)
M(OAc)2 ,NaN(CN)2
M= Zn(II), Cd(II), Hg(II)
N
N
Elsevier Ltd.
Polyhedron 70, 9 March 2014
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Polyhedron
journal homepage: www.elsevier .com/locate /poly
Mauricio Cattaneo, Mónica M. Vergara,Mónica E. García Posse,Florencia Fagalde, Teodor Parella andNéstor E. Katz
Polyhedron 70 (2014) 20
Spectroscopic, electrochemical and computa-tional studies of rhenium(I) and ruthenium(II)complexes incorporating the novel tetradentateligand 1,4-bis(4-(4¢-methyl)-2,2¢-bipyridyl)-2,3-diaza-1,3-butadiene (BBDB) and its deriva-tives
A new bridging ligand, 1,4-bis(4-(4¢-methyl)-2,2¢-bipyridyl)-2,3-diaza-1,3-buta-diene (BBDB), and novel complexes ofrhenium tricarbonyls, ruthenium polypyr-idines and ruthenium ammines containingBBDB and its hydrolysis derivatives havebeen synthetized and characterized byspectroscopic, electrochemical and compu-tational techniques.
Lauren R. Holloway, Andrew J. Clough,Jessica Y. Li, Emily L. Tao, Fu-Ming Taoand Lijuan Li
Polyhedron 70 (2014) 29
A combined experimental and theoretical studyof dinitrosyl iron complexes containing chelat-ing bis(diphenyl)phosphinoX (X = benzene,propane and ethylene): X-ray crystal structuresand properties influenced by the presence orabsence of p-bonds in chelating ligands
Dinitrosyl iron complexes with formula[(DPPX)Fe(NO)2], {DPPX = 1,2-bis(diphe-nylphosphino)benzene (1), 1,3-bis(diphe-nylphosphino)propane (2), and cis-1,2-bis(diphenylphosphino)ethylene (3)} havebeen prepared and characterized by FT-IR,NMR, UV–Vis, X-ray crystallography, elec-trochemical techniques, and DFT calcula-tions. The presence of p-bonds between thetwo phosphorus atoms lowered theHOMO–LUMO gap and caused charge de-localization upon oxidation.
S.M. Shakil Hussain, Mansur B. Ibrahim,Atif Fazal, Rami Suleiman,Mohammed Fettouhi and Bassam El Ali
Polyhedron 70 (2014) 39
Palladium–bis(oxazoline) complexes withinherent chirality: Synthesis, crystal structuresand applications in Suzuki, Heck andSonogashira coupling reactions
New palladium–bis(oxazoline) (Pd–BOX)complexes were synthesized and charac-terized. The coordination to the palladiumion allows the non C2-symmetric bis(ox-azoline) ligand-based palladium complexesto acquire a rigid backbone curvaturegenerating an inherent chirality. The cata-lytic activities were evaluated in Suzuki–Miyaura, Mizoroki–Heck and Sonogashiracoupling reactions.
Pd
PhO
O
N N
O
MeMe
MeMeCl Cl
H2N I + OMe
OPd-BOX A
K2CO3, DMF70 oC, 12 h H2N
CO2Me
94 %
Yu-Hui Tan, Yin-Mei Yu, Jian-Bo Xiong,Ji-Xing Gao, Qing Xu, Chao-wu Fu,Yun-Zhi Tang and He-Rui Wen
Polyhedron 70 (2014) 47
Synthesis, structure and ferroelectric–dielectricproperties of an acentric 2D framework withimidazole-containing tripodal ligands
Compound 1 has a two-dimensional hon-eycomb networks with (6, 3) topology,exhibits a typical ferroelectric with electrichysteresis loops.
vContents
Z. Puterová-Tokárová, V. Mrázová,J. Kozíšek, J. Valentová, B. Vranovicováand R. Boca
Polyhedron 70 (2014) 52
Magnetostructural correlation in tetracopper(II)cubanes
Tetranuclear copper(II) complex withSchiff base ligand possessing the cubane-like structure with {Cu4O4} core beenstudied by means of X-ray crystallographyand magnetometry. The magnetic dataconfirm that both, the antiferromagneticand ferromagnetic exchange coupling ap-ply according to two coupling constants.The overall exchange coupling is of anantiferromagnetic nature.
T/K0 50 100 150 200 250 300
χ mol/(1
0−6 m
3 mol
−1)
0.00
0.05
0.10
0.15
Svetlana G. Kozlova, Maxim R. Ryzhikov,Vladimir A. Slepkov andSvyatoslav P. Gabuda
Polyhedron 70 (2014) 59
Spin–orbit coupling and d2–d2 interactions indinuclear bioctahedral metal clusters
How spin–orbit interaction, magneticproperties and meta–meta distance areinterrelated in bioctahedral face-sharedcluster complex [M2X9]3) (M = V, Nb, Ta,and X = Cl, Br, I).
Jian-Bao Li, Rong Wang, Min Liu,Man-Hua Wu, Qiong-Hua Jin,Zhong-Feng Li, Han-Qin Tang,Jin-Zhao Xiang, Mei-Song Guo andGe Song
Polyhedron 70 (2014) 65
Synthesis and structural characterization ofseven copper(I) complexes with 3-amino-5,6-dimethyl-1,2,4-triazine and triphenylpho-sphine/triphenylarsine
Seven copper(I) complexes have beensynthesized by the reactions of CuX(X = Cl, Br, I, SCN) with EPh3 (E = P for1–4; E = As for 5–7) and 3-amino-5,6-dimethyl -1,2,4-triazine in mixed solvent.Complexes 1–7 have been characterized byIR, NMR, luminescence, elemental analysesand X-ray diffraction.
Nicolay N. Golovnev, Maxim S. Molokeev,Sergey N. Vereshchagin,Victor V. Atuchin, Maxim Y. Sidorenkoand Michael S. Dmitrushkov
Polyhedron 70 (2014) 71
Crystal structure and properties of the precur-sor [Ni(H2O)6](HTBA)2Æ2H2O and the complexesM(HTBA)2(H2O)2 (M = Ni, Co, Fe)
Four new compounds, the discrete complex[Ni(H2O)6](HTBA)2Æ2H2O (1) and three co-ordination polymers M(H2O)2(HTBA-O,S)2,M = Ni (2), Co (3) and Fe (4), weresynthesized and structurally characterized.Blue single crystals of 1 precipitate insolution at 5–20 �C as a precursor to 2then quickly decompose into the yellowpowder Ni(H2O)2(HTBA)2 (2).
vi Contents
José S. Casas, María S. García-Tasende,Agustín Sánchez,Ángeles Sánchez-González,José Sordo, Ángeles Touceda andMargarita Vázquez-González
Polyhedron 70 (2014) 77
Synthesis, characterization and in vitro toxicityassessment of DMPS-capped CdTe quantumdots
Water-soluble CdTe quantum dots cappedwith 2,3-bis(sulfanyl)propane-1-sulfonatehave been prepared and their potentialuse as a heavy metal fluorescent probe wasexplored. The work also includes a pre-liminary analysis of the new QDs cytotoxi-city on HeLa and LLC-PK1 cells.
Mohsen Ouled Mohamed Sghaier,Krystyna Holderna-Natkaniec,Aneta Wozniak-Braszak, Piotr Czarneckiand Slaheddine Chaabouni
Polyhedron 70 (2014) 85
Structure and internal dynamics of N,N-diethy-lethylendiammonium pentachloroantimonia-te(III)–N,N-diethylethylendiammoniumdichloride
Layered crystal structure of N,N-diethy-lethylendiammonium pentachloroantimo-niate(III)–N,N-diethylethylendiammoniumdichloride.Calculated temperature dependence of thecorrelation times of: C3 fold reorientationof two methyl groups from subunit A (redline a) as well as from subunit B (blue linec), the C3 fold reorientation of the ammoniagroup from subunit B (dashed blue, line d),the [C6H18N2] cation reorientation aroundthe pseudo C3 fold symmetry axis fromsubunit A (dashed red, line b) and subunitB (point blue, line e) of the studied sample.
Mohammad Hakimi, Keyvan Moeini,Zahra Mardani and Fabian Mohr
Polyhedron 70 (2014) 92
Microwave-assisted template synthesis ofdiazacyclam-based macrocyclic copper complexand forming octahedral, square planar andsquare pyramidal geometries by ion exchangingand introducing a novel 2D square-gridcopper–mercury coordination polymer
The copper complex of 1,3,6,10,12,15-hexaaza-tricyclo[13.3.1.16,10]eicosane (L), [CuL(NO3)2],was synthesized in reaction between copper(II)nitrate with N-(2-aminoethyl)-1,3-diaminopro-pane and formaldehyde under microwavecondition. The product then was treated withKBr, KI and HgCl2 to give [CuL]Br2, [CuLI][CuLI]¢I2ÆH2O complexes and novel coordinationpolymer, {[CuL(NO3)]2[Hg5(l-Cl)8(l3-Cl)2]Cl2}n,respectively. The complexes are characterizedby FT-IR, Raman and UV–Vis spectroscopies,cyclic voltammetry and X-ray crystallography.Photoluminescent property of [CuL(NO3)2] wasalso investigated.
Edmond Y. Njua, Mathew E. Otang andLothar Stahl
Polyhedron 70 (2014) 101
Group 1 cyclopentadienide/group 1,14-tert-but-oxide adducts: Ion exchange and coordinationpolymer formation
MCp (M = Na, K, Cp = C5H5) form non-identical coordination polymers with tern-ary tert-butoxides of the type MEl(OtBu)3,El = Ge(II), Sn(II). KCp maintains it chainstructure, decorated with K(THF)2Sn(OtBu)3 units, but the linear NaCp chainbecomes intercalated with the ternary tert-butoxide salts and forms zigzag chains. Thesalts NaGe(OtBu)3 and KCp undergo cationexchange prior to adduct formation.
viiContents
Adrian I. Borhan, Vasile Hulea,Alexandra R. Iordan andMircea N. Palamaru
Polyhedron 70 (2014) 110
Cr3+ and Al3+ co-substituted zinc ferrite:Structural analysis, magnetic and electricalproperties
In this contribution we attempt to trace acorrelation between structural featuresand physical properties of Cr–Al co-sub-stituted zinc ferrite. Trivalent cations sub-titution in the B sublattice weaken bothA–B and B–B interactions simultaneouslyand hence the collinear ferrimagneticstructure not be so strongly affected.According to literature, the mechanism bywhich a third metal changes the propertiesof these complex systems is still a matter ofcontrovers.
Nives Kitanovski, Nataša Borsan,Marta Kasunic, Vojmir Francetic,Jasminka Popovic, Igor Djerdj,Xavier Rocquefelte, Jan Reedijk andBojan Kozlevcar
Polyhedron 70 (2014) 119
Chromium coordination compounds withbis(3,5-dimethylpyrazol-1-yl)acetic acid or itsanion
Two new chromium(III) compounds with aneutral ligand bis(3,5-dimethylpyrazol-1-yl)acetic acid or its anionic form (HL/L)),namely [Cr(L)2](H(NO3)2) and [Cr(HL)Cl3]are presented. Both reveal a mononuclearoctahedral coordination motif, but thecatalytic expectations differ significantly.The neutral compound by one tridentateHL per one Cr(III) and labile chlorideligands is clearly more promising than theionic compound with two L) fully sur-rounding the coordination sphere.
Joseph S. Merola and Folami T. Ladipo
Polyhedron 70 (2014) 125
Alkyne reactions with trimethylphosphinecomplexes of iridium: Lessons for the catalysisof vinyl ester formation and alkynedimerization
A system with phenylacetylene and ben-zoic acid with an iridium catalyst producesproducts from addition of phenylacetyleneto phenylacetylene, benzoic acid tophenylacetylene and benzoic acid to thephenylacetylene/phenylacetylene product.The compounds whose structures areshown were metal complexes isolatedfrom this reaction system.
Ludger A. Wessjohann andMarco A. Dessoy
Polyhedron 70 (2014) 133
An efficient method for the preparation ofsilyl esters of diphosphoric, phosphoric, andphosphorous acid
Trialkylsilylesters of diphosphate, phos-phate, and phosphite are accessible in bulkin quantitative yield by a new triphasicreaction system. Partial/full hydrolysis ofthe Si–(OP) bonds is possible withoutaffecting the P–O–P bonds. The distributionof partially hydrolyzed esters depends,among other factors, on the silyl migrationaptitude.
viii Contents
Rati Agrawal, Varsha Goyal,Raakhi Gupta, Raghavaiah Pallepogu,Ramesh Kotikalapudi, Peter G. Jones andRaj K. Bansal
Polyhedron 70 (2014) 138
Organotin(IV) complexes with imidazo[1,2-a]pyridines
The three-components reaction of di-methyltin dibromide with imidazo[1,2-a]pyridine and allyl bromide in ethanolaffords the ionic complex bis(1-allylimida-zo[1,2-a]pyridinium) dimethyltetrabro-mostannate(II). An X-ray crystal structureanalysis of the complex reveals the tinatom to be hexacoordinated, forming adianion. Organotin(IV) halides on reactingwith imidazo[1,2-a]pyridines yield 1:2complexes having imidazo[1,2-a]pyridinesmolecules coordinated to the tin atomthrough N1.
Tanya K. Todorova, Frederic Poineau,Paul M. Forster, Laura Gagliardi,Kenneth R. Czerwinski andAlfred P. Sattelberger
Polyhedron 70 (2014) 144
Molecular and electronic structure ofTc2(O2CCH3)2Cl4 studied by multiconfigura-tional quantum chemical methods
The molecular and electronic structure, aswell as the electronic absorption spectrumof Tc2(O2CCH3)2Cl4 were studied by multi-configurational quantum chemical meth-ods. The computed ground state geometryis in excellent agreement with the experi-mental structure determined by singlecrystal X-ray diffraction. The lowest energyband corresponds to the d fi d* transition.
Sule Sahin Ün
Polyhedron 70 (2014) 148
Cyclotriphosphazenes having stereogenicphosphorus atoms: Synthesis, characterizationand their stereogenic properties
Cyclotriphosphazene derivatives with twoequivalent stereogenic centres and an un-symmetrical phosphorus atom weresynthesized and characterized. In additiontheir stereogenic properties were investi-gated by X-ray crystallography and CSAadded 31P NMR spectroscopy.
Three diastereoisomers
(4) (5) (6)
Ritwik Modak, Yeasin Sikdar,Senjuti Mandal, Carlos J. Gómez-García,Samia Benmansour, Sudipta Chatterjeeand Sanchita Goswami
Polyhedron 70 (2014) 155
Homo and heterometallic rhomb-like Ni4 andMn2Ni2 complexesTwo new polynuclear complexes with hydroxyl-richSchiff base ligand 3-[(2-Hydroxy-benzylidene)-ami-no]-propane-1,2-diol (H3L), namely [NiII
2(HL)(H2L)(SCN)]2ÆDMF (1) and [MnIII
2NiII2(HL)2(L)2] (2) have
been synthesized and characterized by single crystalX-ray diffraction, elemental analyses, FTIR, UV–Visspectroscopy and variable temperature magnetic
susceptibility measurements. The X-ray refinementsreveal that both compounds present defectiverhomb-like dicubane central cores (Ni4 in 1 andMn2Ni2 in 2). Magnetic susceptibility measurementsindicate the presence of overall antiferromagneticexchange interactions in 1 along the side connectedby a N and O atoms (J1 = )43.6 cm)1) and along theshort diagonal of the rhomb (J3 = )3.9 cm)1) and aweak ferromagnetic coupling (J2 = +5.8 cm)1) alongthe side of the rhomb connected by a double O-bridge. In 2 the three exchange interactions arenegative (J1 = J2 = )0.3 cm)1 and J3 = )0.7 cm)1). Amagneto-structural correlation with the ratio be-tween the Ni–O–Mn bond angle and the Mn–O bondlength is also discussed for double O-bridged Mn–Nipairs.
ixContents
Jan Janczak
Polyhedron 70 (2014) 164
Synthesis, characterisation and DFT calculationsof the magnesium phthalocyanine complexeswith n-butanol and n-pentanol
Two pentacoordinated complexes of mag-nesium phthalocyanine (MgPc) with n-butanol and n-pentanol, (MgPc(C4H9OH)and MgPc(C5H11OH)), in the crystallineform were obtained. Ligation of the MgPcby n-alcohols does not change the colour-ing properties compared to the parentMgPc pigment. Due to the steric hindranceof the axial ligand, the crystals ofMgPc(C4H9OH) and MgPc(C5H11OH) areabout three times more soluble than theparent MgPc.
I.I. Ozturk, O.S. Urgut, C.N. Banti,N. Kourkoumelis, A.M. Owczarzak,M. Kubicki and S.K. Hadjikakou
Polyhedron 70 (2014) 172
Synthesis, structural characterization and cyto-static properties of N,N-dicyclohexyldithiooxa-mide complexes of antimony(III) halides(SbX3, X: Br or I)
Two new polymeric complexes of formula{[SbX3(HDTOA)1.5]}n (X = Br, I) weresynthesized and characterized. The in vitrocytotoxic activity against MCF-7 and HeLacell lines were evaluated. Correlation of theexperimental ID50 values with six para-meters is performed by PLS regressionanalysis, indicating that the type of theligand is crucial for the cytotoxicity of thistype of complexes against MCF-7 cells.
Peng Du, Yan Yang, Ying-Ying Liu,Yuan-Chun He, Hong-Mei Zhang andJian-Fang Ma
Polyhedron 70 (2014) 180
Four metal–organic frameworks built fromdistinct secondary building blocks: Syntheses,structures, photoluminescence and photocata-lytical properties
Four metal–organic frameworks based on aflexible acid have been synthesized. Thephotocatalytical properties of compounds1 and 2 and photoluminescent behaviors of3 and 4 have been investigated.
M. Srinidhi Raghavan, Piyush Jaiswal,Nalini G. Sundaram andS.A. Shivashankar
Polyhedron 70 (2014) 188
A composition-dependent ‘‘re-entrant’’ crystal-lographic phase transition in the substitutionalmetal acetylacetonate complex (Cr1)xGax)(acac)3
It is found that the metalorganic complexsolid solution (Cr1)xGax)(acac)3, 0 < x < 1.0(acac = acetylacetone) undergoes a crystal-lographic transition from cetrosymmetricto non-centrosymmetric and back to cen-trosymmetric structure as x is varied from0 to 1.0. Non-centrosymmetry, and theattendant doubling of the unit cell, is theresponse to disorder present in the carbonatoms of the ligand in the Cr-rich composi-tions.
x Contents
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xi Contents