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Mercury(II) halide complexes of tertiary phosphines Part XV. Crystal structure of the mercury(II) halide-phosphine complex of unusual stoichiometry, (Me3P)2(HgI2)3

1991; Elsevier BV; Volume: 179; Issue: 1 Linguagem: Inglês

10.1016/s0020-1693(00)85375-x

1873-3255

Norman A. Bell, Lorraine A. March, Ian W. Nowell,

Synthesis and characterization of novel inorganic/organometallic compounds

Crystals of the complex are triclinic, space group P1 with a = 9.439(2), b = 8.108(6), c = 8.532(1) Å, α = 105.74(8), β = 88.48(3), γ = 103.64(3)°. The structure was solved using the heavy atom method and refined to a final R of 0.1033 for 1740 observed diffractometer data. The structure contains Hg in two very different environments and comprises octahedrally coordinated mercury in which linear (Me3P)2Hg2+ cations are weakly linked to 4HgI3− anions, resulting in chains along c. The trigonal HgI3− units link in pairs via further weak Hg---I interactions to form highly asymmetric Hg2I62− dimers, thereby linking the chains together.