The preparation, properties and X-ray structures of gold(I) trithiophosphite complexes
作者:Christoph E. Strasser、Stephanie Cronje、Hubert Schmidbaur、Helgard G. Raubenheimer
DOI:10.1016/j.jorganchem.2006.07.034
日期:2006.11
The first gold(I) trithiophosphite complexes were synthesised and fully characterised. Reaction of (tht)AuX (X = Cl, C6F5; tht = tetrahydrothiophene) with trithiophosphites (RS)(3)P (R = Me, Ph) and the bicyclic [(SCH2CH2S)PSCH2](2) (L-2) afforded the corresponding molecular complexes (RS)(3)PAuX [R = Me, X = Cl (1); R = Me, X = C6F5 (2); R = Ph, X = Cl (3); R = Ph, X = C6F5 (4)], and L-2(AuX)(2) [X = Cl (5), X = C6F5 (6)]. Reacting (tht)AuCl consecutively with two mole equivalents of (MeS)(3)P and then AgOTf, gave the ionic compound [(MeS)(3)P](2)Au}OTf (7). The compounds were characterised by multinuclear NMR spectroscopy, IR measurements and mass spectrometry, and the crystal and molecular structures of 1, 3, 6, two polymorphs of 2 as well as the known (MeO)(3)PAuCl (8) were determined by X-ray diffraction. The halide complexes 1 and 8 are isostructural and exhibit infinite chains of "crossed-sword"-type aurophilic interactions with Au center dot center dot center dot Au contact distances of 3.2942(3) and 3.1635(4) angstrom, respectively. Complex 6 exhibits a long Au center dot center dot center dot Au contact of 3.4671(9) angstrom. Au center dot center dot center dot S interactions between 3.3455(7) and 3.520(2) angstrom are present in the structures of 1 and one polymorph of 2. (c) 2006 Elsevier B.V. All rights reserved.