Synthesis and characterisation of N-coordinated pentafluorophenyl gold(i) thiazole-derived complexes and an unusual self-assembly to form a tetrameric gold(i) complexElectronic supplementary information (ESI) available: Characterisation data for 1. See http://www.rsc.org/suppdata/dt/b3/b303625a/
Cronje, Stephanie; Raubenheimer, Helgard G.; Spies, Hendrik S. C.; Esterhuysen, Catharine; Schmidbaur, Hubert; Schier, Annette; Kruger, Gert J.; Cronje Stephanie; Department of Chemistry, University of Stellenbosch; Raubenheimer Helgard G.; Department of Chemistry, University of Stellenbosch; Spies Hendrik S. C.; Department of Chemistry, University of Stellenbosch; Esterhuysen Catharine; Anorganisch-chemisches Institut der Technischen Universität München; Schmidbaur Hubert; Anorganisch-chemisches Institut der Technischen Universität München; Schier Annette; Anorganisch-chemisches Institut der Technischen Universität München; Kruger Gert J.; Department of Chemistry and Biochemistry, Rand Afrikaans University
Журнал:
Dalton Transactions
Дата:
2003
Аннотация:
Treatment of [Au(C6F5)(SC4H8)] (1) (SC4H8 = tetrahydrothiophene or tht) with H.ub1s;C.dbd;NC(CH3).dbd;C(H)S.ub1e;, CH3S.ub1s;C.dbd;NC(CH3).dbd;C(H)S.ub1e;, (I) or piperidine yields the neutral mononuclear imine complexes [Au(C6F5){.ub1s;N.dbd;C(H)SC(H).dbd;C.ub1e;CH3}] (2) and [Au(C6F5){.ub1s;N.dbd;C(SCH3)SC(H).dbd;C.ub1e;CH3}] (3), or the amine complex [Au(C6F5){.ub1s;N(H)CH2(CH2)3C.ub1e;H2}] (4). The reaction of 1 with S.dbd;.ub1s;CN(H)C(CH3).dbd;C(H)S.ub1e;, (II) affords the thione complex [Au(C6F5){S.dbd;.ub1s;CN(H)C(CH3).dbd;C(H)S.ub1e;}] (5), which, in CH2Cl2 via spontaneous intermolecular deprotonation of the thione ligand, self-assembles to an unique tetramer of Au(i), [Au{S.dbd;.ub1s;CNC(CH3).dbd;C(H)S.ub1e;}]4 (6) containing a folded rectangle of Au-atoms with aurophlilic interactions [av. Auâ ¯Au distance, 3.02(4) â « and av. Auâ Auâ Au angle, 87(2)°]. N-coordination of the imine complexes has been confirmed by <sup>15</sup>N NMR and the crystal structure determination of 2 which exhibits the expected linear N-coordination and intermolecular Auâ ¯Au [3.345(1) â «] contacts. The crystal structure of 5 shows thione S-coordination of II to the central Au atom.
205.3Кб