Homometallic complexes, binuclear

Fig. 20 Terminal ligands employed in binuclear homometallic complexes...

Among the less common oxidation states those of I and III have the most significance. Complexes of platinum(III) have been of interest for many years because of their intermediacy in substitution reactions of platinum(II) and (IV). More recently binuclear platinum(I) and (III) complexes have been isolated, and the chemistry of these new complexes will be of increasing interest in platinum chemistry. Platinum forms strong homometallic bonds giving rise to multimetallic chain compounds and cluster complexes. The increasing use of X-ray crystallography, and 31P and 19 PtNMR will allow systematic studies to be made on these multimetallic platinum complexes. 

Binding energy, pentacarbonyliron, 6, 3 Binuclear complexes bis-Cp titanium halides, 4, 522 with Ni-M and Ni-C cr-bonds heterometallic clusters, 8, 115 homometallic clusters, 8, 111 Binuclear dicarbonyl(cyclopentadienyl)hydridoiron complexes, with rand C5 ligands, 6, 178 Binuclear iridium hydrides, characteristics, 7, 410 Binuclear monoindenyl complexes, with Ti(IV), 4, 397 Binuclear nickel(I) carbonyl complexes, characteristics, 8, 13 Binuclear osmium compounds, with hydrocarbon bridges without M-M bonds, 6, 619... 

Nickel-metal bonds, binuclear and polynuclear complexes, homometallic clusters, 8, 111 Nickel nanoparticles, preparation, 12, 87 Nickel-nitriles, synthesis and reactivity, 8, 150 Nickelocenes... 

The self-assembly of helicates is a relatively complex process (see Section 3.3), even for homometallic binuclear 4f-4f species. Introducing dissymmetry both in the receptor ligand and in the nature of the metal... 

TABLE 20 Cumulative stability constants reported for the formation of mononuclear and homometallic binuclear complexes in acetonitrile solution (spectrophotometric titration of Lk or [M(L/c)3]" 10 M)... 

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