Au-O Interactions and others in triphenylphosphinegold(I) sulfanylpropenoates with diverse structures

摘要

We investigated the reactions of triphenylphosphinegold(I) chloride in ethanol or methanol with the 3-(2-aryl)-2-sulfanylpropenoic acids H_2xspa [x = f, t, p; f = 3-(2-furyl)-, t = 3-(2-thienyl)-, p = 3-phenyl-; spa = 2-sulfanylpropenoato] in 1:1 and 2:1 mole ratios, and the reactions of diisopropylamine with the 1:1 complexes. Compounds of types [Au(PPh_3)(Hxspa)], [HQ][Au(PPh_3)(xspa)](HQ = diisopropylammonium) and [(AuPPh_3)_2(xspa)] were isolated and characterized by IR, Raman and FAB mass spectrometry and by ~1H, ~(13)C and ~(31)P NMR spectroscopy. The structures of (Htspa)_2·Me_2CO and of the complexes [Au(PPh_3)(Hfspa)] (1), [HQ][Au(PPh_3)(pspa)] (6), [(AuPPh_3)_2(fspa)] (7), [(AuPPh_3)_2(tspa)]·2MeOH (8·2MeOH) and [(AuPPh_3)_2pspa]·2MeOH (9·2MeOH) were determined by X-ray diffractometry; those of the Au complexes exhibit π-stacking, hydrogen bonding and Au-Au and Au-O interactions as well as the expected Au-S and Au-P bonds.