Complexes of Ni(II) with sterically-hindered thiolate ligands. Crystal structures of complexes with the [NiS2N2], [NiS2P2] and [NiS2O2] cores
作者:Eric Block、Gabriel Ofori-Okai、Hyunkyu Kang、Jon Zubieta
DOI:10.1016/s0020-1693(00)80910-x
日期:1991.10
The reactions of NiCl2.6H2O with the thiolate ligands HSC5H3N-3-SiMe3, HSC6H4-2-PPh2 and HSC6H3-6-SiMe3-2-OPPh2 yield the planar mononuclear species [Ni(SC5H3N-3-SiMe3)2], [Ni(SC6H4-2-PPh2)2] and [Ni(SC6H3-6-SiMe3-2-OPPh2)2], respectively. The complexes are electrochemically active, displaying Ni(II)/Ni(III) oxidation processes in the high potential range common to most synthetic Ni(II) complexes. Crystal data: C16H24N2Si2S2Ni: monoclinic P2(1)/n, a = 6.697(1), b = 10.932(2), c = 14.108(3) angstrom, beta = 95.31(1)-degrees, V = 1028.9(8) angstrom-3, Z = 2, D = 1.366 g cm-3. C36H28P2S2Ni: triclinic P1, a = 9.349(3), b = 10.673(3), c = 9.259(2) angstrom, alpha = 105.35(1), beta = 118.52(1), gamma = 91.86(1)-degrees, V = 799.0(9) angstrom-3, Z = 1, D = 1.393 g cm-3. C42H44O2Si2P2S2Ni: monoclinic P2(1)n, a = 12.015(2), b = 27.458(5), c = 12.959(3) angstrom, beta = 96.37(1)-degrees, V = 4248.9(12) angstrom-3, Z = 4, D = 1.285 g cm-3.