Synthesis and structure of new cationic methallyl molybdenum(II) complexes supported by α-diimine ligands

Abstract

Cationic complexes [Mo(η 3–C 3H 4–Me–2)(N–N)(CO) 3] +PF 6 −, {N–N = bipy (2); DAD (Ar–N C(Me)–C(Me) N–Ar: Ar = o-Me–C 6H 4 (3), 2,6-Me 2–C 6H 3 (4); Ar–BIAN (Ar = o-Me–C 6H 4 (5), Ar = iPr 2–C 6H 3 (6)}; were synthesized by treating the compound Mo(CO) 3(p-xylene) with the allyloxyphosphonium salt in situ in presence of diimine ligand. Complex 4 was characterized by single crystal X-ray diffraction. The solid state structure of the complexes revealed a preference for the more unsymmetrical axial isomer.