87263-00-1Relevant academic research and scientific papers
Linking molybdenum or tungsten with platinum. The synthesis and molecular structure of PtMo(μ-Ph2Ppy) (μ-CO)(CO)2Cl2 (Ph2Ppy = 2-(diphenylphosphino)pyridine)
Farr, James P.,Olmstead, Marilyn M.,Rutherford, Nicole M.,Wood, Fred E.,Balch, Alan L.
, p. 1758 - 1762 (2008/10/08)
Reaction of Pt(Ph2Ppy)2Cl2 (Ph2Ppy is 2-(diphenylphosphino)pyridine) with (bicycloheptadiene)Mo(CO)4 or (CH3CN)3W(CO)3 produces PtMo(μ-Ph2Ppy)2(μ-CO)(CO)2Cl2 (98% yield) or PtW(μ-Ph2Ppy)2(μ-CO)(CO)2Cl2 (67% yield), respectively. Infrared and 31P{1H} NMR spectra indicate that the Mo and W complexes have similar structures. PtMo(μ-Ph2Ppy)2(μ-CO)(CO)2Cl2 is also formed in the reaction between Mo(Ph2Ppy)2(CO)4 (phosphorus-bound Ph2Ppy) and (1,5-cyclooctadiene)PtCl2. Red PtMo(μ-Ph2Ppy)2-(μ-CO)(CO)2Cl2 crystallizes in the orthorhombic space group I2cb (c?ba of Iba2, No. 45) with a = 13.784 (6) A?, b = 17.677 (5) A?, c = 31.915 (13) A?, Z = 8, and V = 7776.6 (5) A?3. The structure was refined to a conventional R value of 0.060 by using 3777 significant reflections and 232 parameters. The structure of the binuclear complex indicates that it possesses a Pt-Mo bond (2.845 (1) A? long) and a semibridging carbonyl group. Additional ligating atoms about Pt are 2P and Cl and about Mo are 2N, 2C (from CO), and Cl. The two bridging Ph2Ppy ligands assume a head-to-head arrangement with a trans-P-Pt-P unit and a cis-N-Mo-N unit.
