[Cp2MoH2]–silver complexes with pseudohalide ligands

The reaction of [Cp2MoH2] and AgBF4 with the pseudohalide ligands SCN−, OCN−, CN− and SCF3− afforded the complexes [(Cp2MoH2)2AgSCN] (1), [(Cp2MoH2)2AgNCO]·CH2Cl2 (2), [(Cp2MoH2)2Ag(C3N3H2O3)]·3CH2Cl2 (3), [(Cp2MoH2)2Ag]n[(Ag2(CN)3)n] (4) and [(Cp2MoH2)2AgSCF3]·CH2Cl2 (5). 1, 2 and 5 have a [Cp2MoH2]:Ag:ligand stoichiometry of 2:1:1. Complex 3 contains the anion of the ligand (HNCO)3, formed by trimerization of HNCO. The three-dimensional structure of 4 is built up of polymeric [Ag2(CN)3−]n strings and [(Cp2MoH2)2Ag]+ units. The compounds 1–5 were characterized analytically and spectroscopically. All the structures were determined by single crystal X-ray analysis.