Organometallics fullerenes

A review9 with more than 37 references includes an examination of symmetry groups and chirality conditions for C60 and C70 bonded to one or two metals in rf and/or rf fashion. Palladium and platinum rf complexes of C6o and C70 are described (novel synthesis, NMR spectra, electrochemistry) as well as first optically active organometallic fullerene derivatives. 

Organometallic compounds, 14 550-551 25 71. See also Organometallics carbides contrasted, 4 648 as initiators, 14 256-257 iridium, 19 649-650 molybdenum(III), 17 27 osmium, 19 642-643 palladium, 19 652 platinum, 19 656-657 reaction with carbonyl groups, 10 505-506 rhodium, 19 645-646 ruthenium, 19 639 sodium in manufacture of, 22 777 titanium(IV), 25 105-120 Organometallic fullerene derivatives,... 

Rare examples of organometallic fullerene derivatives with a chiral ligand are the enantiomerically pure complexes [(r 2-C6o)Pt((+)-DIOP)] (DIOP =... 

PM Novel Organometallic Fullerene Complexes for Vehicular Hydrogen Storage ... 

Figure 2.42 Examples of organometallic fullerene complexes with one metal center (a), two metal centers arranged at opposite sites (b) and neighbouring sites (c) and a complex comprising three metal centers in close proximity (d).

Organometallic Complexes of Fullerenes Adam H. H. Stephens and Malcolm L. H. Green... 

The following is a comprehensive smwey of the chemistry of macrocycles comprised entirely of phenyl and acetylenic moieties. Although over fom" decades old, this area of research has come into its own just in the last few years. Widespread interest in the field has been spurred by recent discoveries utilizing these compoimds as ligands for organometallic chemistry, hosts for binding guest molecules, models of synthetic carbon allotropes, and precursors to fullerenes and other carbon-rich materials. This review will discuss the preparation of a tremendous variety of novel structm-es and detail the development of versatile synthetic methods for macro cycle construction. 

Full-color fiat-panel displays, silicon-based semiconductors in, 22 259 Full-connected neural networks, 6 68-69 Fullerene derivatives, 12 248 17 51-52. See also Fullerenes organometallic, 12 249-250 Fullerene diagrams, 12 236 Fullerene formation, methods of, 12 229-230... 

The first chemical transformations carried out with Cjq were reductions. After the pronounced electrophilicity of the fullerenes was recognized, electron transfer reactions with electropositive metals, organometallic compounds, strong organic donor molecules as well as electrochemical and photochemical reductions have been used to prepare fulleride salts respectively fulleride anions. Functionalized fulleride anions and salts have been mostly prepared by reactions with carbanions or by removing the proton from hydrofullerenes. Some of these systems, either functionalized or derived from pristine Cjq, exhibit extraordinary solid-state properties such as superconductivity and molecular ferromagnetism. Fullerides are promising candidates for nonlinear optical materials and may be used for enhanced photoluminescence material. 

Though the synthetic fullerenes have been with us for only three years, the scientific articles based on them number in the thousands. It is therefore important and necessary to have a soiuce of information which summarizes the most important and fimdamental aspects of the organic and organometallic chemistry of the fullerenes. Dr. Hirsch is already well known for his important contributions to the field and is uniquely qualified to write what will become the primary source of information for the practicing organic and organometallic chemist. 

Scheme 2. Synthetic routes to some fullerene organometallics by displacement of weakly bound ligands.

Organometallics have all been prepared by the effective addition of [M]-R into a fullerene double bond (Scheme 4). 

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