186464-80-2Relevant academic research and scientific papers
Synthesis of some phosphino- and arsinobenzenechromium tricarbonyl derivatives and metal carbonyl clusters
Cullen, William R.,Rettig, Steven J.,Zhang, Hongli
, p. 2167 - 2181 (1996)
The synthesis of a number of new phosphino- and arsinobenzenechromium tricarbonyl ligands ER2C6H5Cr(CO)3 (ER2 = PEt2, PPri2;, PBut2, PPh2, AsPh2 AsMe2), ER[C6H5Cr(CO)3]2 (ER = PEt, PBut, PPh, AsPh) has been achieved by reacting lithium derivatives of benzenechromium tricarbonyl with appropriate chlorophosphines or iodoarsines. The spectroscopic properties of these ligands are described. The structure of Pri2PC6H5Cr(CO)3 was determined by an X-ray crystallographic study. This is the first solid state structure to be reported for a phosphinobenzenechromium tricarbonyl derivative. The structures of four metal carbonyl cluster complexes were also determined. Crystals of Pri2PC6H5Cr(CO)3 (3, C15H19CrO3P) are monoclinic, space group P21/c, a = 8.150(2) A, b = 13.490(2) A, c = 15.125(1) A, β = 100.19(1)°, Z = 4; those of Ru3(CO)11[PPri2C6H 5Cr(CO)3] (15, C26H19CrO14PRu3) are monoclinic, space group P21/n, a = 8.565(2) A, b = 21.808(3) A, c = 17.167(3) A, β = 97.41 (2)°, Z = 4; those of Ru3(CO)10[PPh2C6H 5Cr(CO)3]2 (19, C32H15CrO14PRu3) are orthorhombic, space group Pbca, a = 17.367(4) A, b = 24.471(5) A, c = 16.096(3) A, Z = 8; those of Ru3(CO)10[PPri2C6H 5Cr(CO)3]2·CH2Cl2 (16, C40H38Cr2O16P2Ru 3·CH2Cl2) are orthorhombic, space group P21212, a = 13.832(3) A, b = 17.558(2) A, c = 10.144(1) A, Z = 2; and those of Os3(CO)9[PEt2C6H 5Cr(CO)3]3 (26, C48H45Cr3O18Os3P 3) are trigonal, space group P3, a = 15.7558(4) A, c = 12.662(1) A, Z = 2. The structures were solved by the Patterson method and were refined by full-matrix least-squares procedures to R = 0.031, 0.027, 0.029, 0.025, and 0.029 (Rw = 0.027, 0.024, 0.024, 0.023, and 0.025) for 2326, 4110, 3878, 3046, and 4093 reflections with I ≥ 3σ(7), respectively.
