The coordination chemistry of bidentate tellurium ligands. I. Complexes of palladium, platinum, and mercury with large chelate rings
作者:Hema M.K.K. Pathirana、Allan W. Downs、William R. McWhinnie、Pierre Granger
DOI:10.1016/s0020-1693(00)83684-1
日期:1988.3
polymeric. The palladium(II) complexes have trans dichloro groups whereas the platinum compounds show cis dichloro groups in the solid state. 13C NMR spectra are valuable to confirm the coordination of the ligand; the methylene resonance of the TeCH2 group undergoes a 19–20 ppm downfield shift on coordination. 125Te NMR spectra of the Pd(II) and Pt(II) complexes show two broad resonances the chemical
摘要钯(II)和卤化铂(II)与(p-EtO·C6H4)Te(CH2)nTe(C6H4OEt-p)反应形成的配合物(Ln,n = 6,7,8,9,10)与一些汞(II)配合物[HgLnCl2]的数据一起报告,用于比较目的。化合物[MLnX2](M = Pd,Pt; n = 7、8(仅Pt),9、10; X = Cl,Br)在熔融萘中的分子量大约在单体值附近波动。[ML6X2](M + Pd,Pt; X + Cl,Br)完全不溶,被认为是聚合的。钯(II)配合物具有反式二氯基,而铂化合物在固态时显示出顺式二氯基。13 C NMR光谱对于确认配体的配位是有价值的。TeCH2基团的亚甲基共振在配位作用下发生19–20 ppm的低场偏移。Pd(II)和Pt(II)配合物的125Te NMR光谱显示出两个宽泛的共振,其化学位移暗示CDCl3溶液中存在顺式和反式异构体。[PtL8Cl2]的更详细的变温高场研究(125Te和195Pt