Abstract
Abstract The title compound was prepared by the oxidative addition of triphenylsilane to Pt0[1,4-(Cy2P(CH2)4PCy2)] (where Cy = cyclohexyl) generated in situ. The crystal structure of cis-H(Ph3Si)Pt[Cy2P(CH2)4PCy2] (2) has been determined by single-crystal X-ray diffraction techniques. The square planar geometry about the platinum atom is angularly distorted with a bite angle between the diphosphine ligands (PPtP) of 102.3(1)°. Details of the structural content and selected bond lengths and angles are discussed and presented. The phenyl rings are planar and the cyclohexyl rings are in chair conformations. The enlarged tetrahedral angles at the phosphorus and silicon atoms are probably due to the steric bulk of the ligands. “Ligand profile” calculations (θ/2 vs φ) have been performed to probe the steric interaction about the diphosphine and triphenylsilyl ligands.
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