om701206r_si_001.cif (12.46 kB)

Synthesis and Properties of an Unusual New High-Symmetry Osmium−Palladium Carbonyl Cluster Complex

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posted on 24.03.2008, 00:00 by Richard D. Adams, Erin M. Boswell, Burjor Captain
The new tetrahedral complex Os4(CO)12[Pd(PBut3)]4, 3, was obtained from the reaction of Os3(CO)12 with Pd(PBut3)2 in octane solution at reflux. Compound 3 was characterized by IR, 1H and 31P NMR spectroscopy, mass spectroscopy, and single-crystal X-ray diffraction analysis. The electronic structure of 3 was evaluated by Fenske–Hall molecular orbital analysis. Compound 3 is electronically unsaturated and reacts with hydrogen at room temperature to yield the known compound Os4(CO)12(μ-H)4, 4.