THE CRYSTAL AND MOLECULAR STRUCTURE OF Ru3(CO)9(PPh3)3

Abstract

The synthesis of tertiary phosphine and phosphite substituted derivatives of M₃(CO)₁₂ {M = Ru(1a) Os(1b)} is discussed and the X-ray crystal and molecular structure of the tris-triphenylphosphine substituted ruthenium cluster Ru₃(CO)₉(PPh₃)₃ (2a) is reported. Complex 2a crystallises in the monoclinic space group P2₁/n with cell parameters a = 14.180(9), b = 21.644(14), c = 18.248(10) Å, β = 92.52(5)°, V = 5595(6) Å ³, Z = 4. The structure was solved by full-matrix least-squares methods based on F ². The refinement converged at R1 = 0.0564, wR2 = 0.2125 for 4857 observed data F > 4σ(F)].