1,1′‐Bis(methylphenylphosphanyl)ferrocene: Synthesis and Complexes with the Tetracarbonylchromium Fragment

Abstract

Abstract 1,1′‐Bis(methylphenylphosphanyl)ferrocene (mppf) ( 2 ) was synthesized from dilithioferrocene and PMePh(OC 6 H 4 ‐4‐Me). The diastereomers rac ‐ 2 and meso ‐ 2 were separated by fractional crystallization from ethanol. The tetracarbonyl‐chromium complexes ( rac ‐ 2 )Cr(CO) 4 ( rac ‐ 5 ) and ( meso ‐ 2 )Cr(CO) 4 ( meso ‐ 5 ) were obtained photochemically from hexacarbonylchromium and mppf in near quantitative yield. The structures of rac ‐ 2 , rac ‐ 5 , and meso ‐ 5 were determined by X‐ray crystallographic analysis.