Abstract
A variety of Group 6 mono bipyridine (bpy) complexes were prepared, and substitution reactions of [(bpy)(MeIm)M(CO) 2(NO)]PF 6 complexes (MeIm = 1-methylimidazole, M = W or Mo) were investigated. Nitrosylation of complexes having the general formula (bpy)(L)M(CO) 3 (L = a variable ligand) gave cationic complexes of the form [(bpy)(L)M(CO) 2(NO)]PF 6. The structure of [(bpy)(MeIm)W(CO) 2(NO)]PF 6 was confirmed by single-crystal X-ray diffractometry. [(bpy)(MeIm)M(CO) 2(NO)]PF 6 complexes undergo facile substitutions with mono-, tri- and tetra-dentate ligands, yielding di- or mono-carbonyl mononitrosyl complexes. The structures of [(bpy)(PMe 3) 2W(CO)(NO)]PF 6 and [(dien)(PMe 3)W(CO)(NO)]PF 6 (dien = diethylenetriamine) were determined by X-ray diffraction.
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