Rapid Equilibrium between Trigonal-bipyramidal and Square-pyramidal Geometries of 1-Popanethiolato Platinum(II) Complex with Tris[2-(diphenylphosphino)ethyl]phosphine
Sen‐ichi Aizawa, Tadashi Kobayashi
Abstract
Sen‐ichi Aizawa, Tadashi Kobayashi
Abstract
Abstract The rapid equilibrium between five-coordinate trigonal-bipyramidal [Pt(pt)(pp3)]+ (pt = 1-propanethiolate, pp3 = tris[2-(diphenylphosphino)ethyl]phosphine) and square-pyramidal [PtI(pt)(pp3)] with an axially coordinated I− and dissociated terminal phosphino group was clearly observed in the presence of a large excess of I− at low temperatures. Such a square-pyramidal intermediate is expected to be formed in the course of substitution reactions of trigonal-bipyramidal Pt(II) complexes.
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Abstract The rapid equilibrium between five-coordinate trigonal-bipyramidal [Pt(pt)(pp3)]+ (pt = 1-propanethiolate, pp3 = tris[2-(diphenylphosphino)ethyl]phosphine) and square-pyramidal [PtI(pt)(pp3)] with an axially coordinated I− and dissociated terminal phosphino group was clearly observed in the presence of a large excess of I− at low temperatures. Such a square-pyramidal intermediate is expected to be formed in the course of substitution reactions of trigonal-bipyramidal Pt(II) complexes.
Key concepts: Trigonal bipyramidal molecular geometry, Chemistry, Phosphine, Square pyramidal molecular geometry, Tris, Platinum, Trigonal pyramidal molecular geometry, Crystallography