title: A dynamic disorder-linked reversible phase transition in a new chloroform solvate of cis-dichloridobis(triethylphosphane)platinum(II).
abstract: The title compound, cis-dichloridobis(triethylphosphane)platinum(II) chloroform monosolvate, [PtCl(2)(C(6)H(15)P)(2)]·CHCl(3), has been obtained from ligand scrambling in the cis-[PtCl(2)(Cyp(2)PCl)(PEt(3))] (Cyp = cyclopentyl) system in CHCl(3) solvent. Unlike the two previously reported unsolvated polymorphs, which are both monoclinic, the compound crystallizes in an orthorhombic setting. Furthermore, the system exhibits a reversible temperature-dependent structural phase transition, coupling a reduction in anisotropic displacement parameters and a reduction in crystallographic symmetry on cooling. The high-temperature phase adopts space group Pnma with the complex and solvent molecules sitting across a crystallographic mirror plane (Z' = 0.5). The low-temperature phase adopts the space group P2(1)2(1)2(1) with Z' = 1.
authors.affiliation: Chemistry Department, Durham University, Science Site, South Road, Durham DH1 3LE, England.
authors.forename: Keith B
authors.initials: KB
authors.lastname: Dillon
authors.forename: Judith A K
authors.initials: JA
authors.lastname: Howard
authors.forename: Philippa K
authors.initials: PK
authors.lastname: Monks
authors.forename: Michael R
authors.initials: MR
authors.lastname: Probert
authors.forename: Helena J
authors.initials: HJ
authors.lastname: Shepherd