Darstellung und Charakterisierung der Isonitril-Hydridkomplexe Cp′(CO) 2(CNR)MH [Cp′ = η 5-C 5H 5, η 5-C 5Me 5; R = Me, tBu; M = Mo, W). Molekülstruktur von C 5Me 5(CO) 2(CN tBu)MoH

Abstract

The hydrido complexes Cp′(CO) 3MH (Cp′ = η 5-C 5H 5, η 5Me 5; M = Mo, W) react with isonitriles CNR (R = Me, tBu) to give the monosubstitution products Cp′(CO) 2(CNR)MH. The photolysis of C 5H 5(CO) 2(CN tBu)WH yields [C 5H 5(CO) 2W] 2CN tBu. The hydrido ligand of the isonitrole hydrido complexes can be readily exchanged for a chloro ligand in chlorine-containing solvents. In this reaction the trans configuration of the carbonyl ligands changes to cis. The structure of C 5Me 5(CO) 2(CN tBu)MoH has been determined by X-ray diffraction.