About the Reaction of C(PPh₃)₂ with [M(CO)₆] (M = Cr, Mo): Unusual Formation of μ‐Carbonato Complexes of Mo under Participation of THF

Abstract

Attempts to synthesize complexes of group 6 carbonyl compounds [M(CO) 6 ] (M = Cr, Mo, W) with the carbone C(PPh 3) 2 (1) via the photo chemically created adducts [(CO) 5 M(THF)] lead to quantitative formation of the salts [HC(PPh 3) 2 ] 2 [M 2 (CO) 10 ] (2, Cr; 3, Mo; 4, W). Alternatively, a long-time thermal reaction of [Mo(CO) 6 ] performed with 1 in THF generates a series of products initiated by a Wittig-type reaction.