Mixed-ligand complex compounds [Pb(Phen)x{(iso-C4H9)(2)PS2}(2)] and [Pb(2,2 '-Bipy){(iso-C4H9)(2)PS2}(2)] and formation of supramolecular assemblies in their crystal structures

摘要

Mixed-ligand complex compounds [Pb(Phen)(i-Bu2PS2)](2) (I) and [Pb(2,2'-Bipy)(i-Bu2PS2)](2) (II) were synthesized. Their structures were determined from X-ray diffraction data (X8 APEX diffractometer, MoK (alpha) radiation, 6392 (Fhkl) , R = 0.0233 for I and 3937 F (hkl) , R = 0.0252 for II). Crystals I are triclinic: a = 10.2662(3)angstrom, b = 12.3037(2)angstrom, c = 14.8444(4)angstrom; alpha = 92.054(1)degrees, beta = 103.473(1)degrees, gamma = 105.561(1)degrees, V = 1746.89(8)angstrom(3), Z = 2, rho(calc) = 1.532 g/cm(3), space group P (1) over bar. Crystals II are monoclinic: a = 9.3462(3) angstrom, b = 26.3310(12)angstrom, c = 28.5345(13) angstrom; beta = 96.436(1)degrees, V = 6977.9(5)angstrom(3), Z = 8, rho(calc) = 1.489 g/cm(3), space group P2(1). The structures are built from mononuclear molecules. In both structures, the intermolecular contacts between the Pb and S atoms of the neighboring mononuclear molecules form supramolecular assemblies involving two molecules. The environment of the Pb atoms in the assemblies is a pentagonal bipyramid, N2S4+1. The assemblies are joined into ribbons by pi-pi interactions of the Phen rings in I and C...C short contacts between the pyridine rings in II.