Crystal and molecular structure of di-µ-carbonyl-dicarbonyl[cyclohexyl(diphenyl)phosphine](π-methylcylopentadienylnickelio)cobalt
Abstract
The crystal structure of the title compound has been determined by X-ray diffraction methods using counter data. Refinement to R 0·084 for 3661 reflections was carried out by a least-squares procedure. The monoclinic unit cell, space group P21/c, has dimensions a= 14·261 ± 0·022, b= 10·034 ± 0·017, c= 18·508 ± 0·032 Å, β= 98·5 ± 0·1°, for Z= 4. The dimer molecule has a non-planar Ni(CO)2Co bridging system, the angle between the two Ni(CO)Co planes being 133·9°. Metal to bridge-carbon distances are Ni–C 1·85, Co–C 1·93 Å; Ni ⋯ Co is 2·418(2) and Co–P 2·269 Å. The cobalt atom is in a square-based pyramidal environment. The methylcyclopentadienyl ligand and the phenyl rings are planar, and the cyclohexyl ring is in a chair conformation.