Fullerene Metal Complexes Department of ChemistrySubmitted by: Marwa Al-Aqarbeh (9130134) *

Fullarene DiscoveryDiscovered by smelly, Kroto, curl and coworkers in 1985,

they were awarded noble price in chemistry for their fullerene discovery in 1996.

fullerene familiarly named BuckminsterFuller

A New Form of CarbonDiamond Graphite C60 Buckyball

Fullerene synthesis KrtSchmer Huffman method, Arc Vaporization of graphite

Fullerene synthesisother methodlaser Ablation hydrocarbon combustion Indicatively RF evaporation of graphite and low pressure helium sputtering

Fullerene solubility C60 and C70 are sparingly soluble in many solvent but benzene, Toluene is familiar solvent used as reaction medium

Fullerene StructureBuckyball clustersC20,C60, C70, C76, C78, C80 and C84

Other structure Nanotubes

C60 structure C60 has a spherical structure like football with 7 diameter with 60 vertices and 32 faces the atoms connected in 5- and 6- membered ring (12-pentagonal, 20-hexagonal)

Fullerene ReactionsPossible reactions C60 and C70 (to a lesser extent) may undergoAdditionsPolymerizationSubstitutionsT

Fullerene reaction siteExohedral FullerenesAtoms, molecules, and complexes are attached to the exterior of the cage Endohedral FullerenesMolecules are enclosed within the cage

Endohedral FullerenesFullerene cages with encapsulated molecule have many potential applications. For example they will be able to encage a radioactive tracer and inject that safely into the human body.).

Endohedral FullerenesThe lanthanide metal fullerene are less research work but Gd3N@C80 are promising MRI agent which is give a high relaxtivity than common Gd-DoTA MRI agent actually used

Exohedral Fullerenes1: bonded to metal directly above C- atom with 6- bound.2: bounded to metal may (6, 6) or (6, 5), but (6, 6) is common.3: bounded to metal with 3- metal whether in 5-ring like allyl linkage.4: bounded metal to four atoms like butadiene .5: metal linked above a 5-memmber ring like cyclo-pentadienyl ligand.6: metal linked above a 6- member ring link benzene ligand

Exohedral Fullerenes

Exohedral Fullerenes

1, 3, 4

even though theoretical calculation is possible, but expiremantly result compounds not stable

1

3C60Ph3 Co (Co) 3 , C60H3NiC5H5, and C60L3FeC5H5

2M(CO)Cl(PPh)3 + C60 M= Ir, Rh, Fe

2

2

5

6

Conclution Fullerene organometallic compounds belong to two major groups; with 2 and With 5 hapticities.

Thank you

***Notice hexagonal rings present in graphite structure.****