Reactions of Transition-Metal Sigma-Acetylides. V. Synthesis and X-Ray Structure of Co₂(µ-η²-PhC₂Fe(Co)₂(η-C₅h₅))(Co)₆

Abstract

The reaction between Co₂(CO)₈ and Fe(C₂Ph)(CO)₂(η-C₅H₅) gave the title complex in 44% yield. The molecular structure was determined from a single-crystal X-ray diffraction study, and consists of the transition metal acetylide acting as a conventional μ- alkyne ligand to a Co₂(CO)₆ unit. Crystals are monoclinic, space group P2₁/n, with a 11.610(8), b 14.657(4), c 12.526(6)Ǻ, β 90.30(5)°, and Z 4; 1683 independent data were refined to R 0.080, R_w 0.087.