Crystal and molecular structure of tricarbonyldichlorobis(triethyl-phosphine) molybdenum(II)

Abstract

Crystals of the title compound are orthorhombic, space group Iba2, with a= 27.989(21), b= 12.356(13), c= 12.956 (15)Å, Z= 8. The intensities of 1 175 independent reflections above backgrounds were collected by counter methods and refined to R 0.085. The molecule is a seven-co-ordinate monomer with the metal atom in a capped octahedral environment. One carbonyl group occupies the capping position [Mo–C 2.00(3)Å], two carbonyl groups [Mo–C 1.92(3) and 2.01(3)Å] and one phosphorus atom [Mo–P 2.556(9)Å] are in the capped face, and two chlorine atoms [Mo–Cl 2.478(7) and 2.537(9)Å] and one phosphorus atom [Mo–P 2.580(9)Å] are in the uncapped face. The two phosphorus atoms are mutually trans.