Trimethylphosphan- und Carbonyl-hydrid-Halbsandwichkomplexe des Chroms, Molybdäns und Wolframs: C5Hf5−, C5Me5− und ein isoelektronischer 6e−-Sauerstof-Tripodligand im Vergleich

摘要: Abstract Tricarbonylhydrido complexes of the type LM(CO) 3 H (L −  η 5 -C , Me [C Co{;P(O)(OEt) 2 }; ] ; M Cr, Mo, W) react thermally or photochemically with PMe in solution to form monosubstitution products (PMe )H, and disubstitution LM(CO)(PMe ) H. The C derivatives (R H, Me) consists cis trans isomers. tripod analogs, however, give only more stable isomer. In all cases, showed one isomer, probably form. energy barrier for pseudo-rotation carbonyl hydrido ligands starting materials substitution is higher R than compounds O -tripod ligands. dinuclear L(CO)(PMe MM(CO) L could be detected as by-products from photoinduced reactions.