One-dimensional phosphinite platinum chains based on hydrogen bonding interactions and phosphinite tetranuclear platinum(II)-thallium(I)complexes

摘要

The mononuclear pentafluorophenyl platinum complex containing the chelated diphenylphosphinous acid/diphenylphosphinite system [Pt(C6F5){(PPh2O)2H}(PPh2OH)] 1 has been prepared and characterised.1 and the related alkynyl complex [Pt(C≡CBu~t){(PPh2O)2H}(PPh2OH)] 2 form infinite one-dimensional chains in the solid state based on intermolecular O-H...O hydrogen bonding interactions.Deprotonation reactions of [PtL{(PPh2O)2H}(PPh2OH)](L = C6F5 1,C≡CBu~t 2,C≡CPh 3)with [Tl(acac)] yields tetranuclear Pt2Tl2 complexes [PtL{(PPh2O)2H}(PPh2O)Tl]2(L = C6F5 4,C≡CBu~t 5,C≡CPh 6).The structure of the tert-butylalkynyl derivative 5,established by X-ray diffraction,shows two anionic discrete units [Pt(C≡CBu~t){(PPh2O)2H}(PPh2O)]-joined by two T1(I)centres via Tl-O and Pt-Tl bonds.Despite the existence of Pt-Tl interactions,they do not show luminescence.