Organometallic Molybdenum(V) Complexes with Promary Phosphane Ligands — Syntheses, Spectroscopic Properties, and Crystal Structures of [Cp′MoCl₄(PH₂R)] (R=2,4,6‐Prⁱ₃C₆H₂, Cyclohexyl, Cp′=C₅H₄Me)

Abstract

Abstract [Cp′MoCl 4 (CH 3 CN) (Cp′=C 5 H 4 Me) react with 2,4,6‐triisopropylphenylphosphane or cyclohexylphosphane to give the phosphane complexes [Cp′MoCl 4 (PH 2 R)] [R=2,4,6‐Pr i 3 C 6 H 2 ( 1 )]. 1 and 2 , were characterized spectroscopically (IR, MS) and by crystal structure determinations. EPR investigations in liquid and frozen solution confirmed the presence of Mo(V) species and the data were used to analyze the spin‐density distribution in the first coordination sphere.