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Keto-stabilized phosphorus ylide gold(I) and gold(III) complexes

1987; Elsevier BV; Volume: 333; Issue: 1 Linguagem: Inglês

10.1016/s0022-328x(00)99038-7

1872-8561

José Vicente, M.T. Chicote, Isabel Saura‐Llamas, J. Turpin, Juan Fernández‐Baeza,

Metal complexes synthesis and properties

Reactions between [AuCl(tht)] (tht = tetrahydrothiophene) and the ylides Ph3PCHC(O)R give complexes [AuCl“CH(PPh3)C(O)R”] (R = Me, Ph), which react (1) with chlorine to give [AUCl3“CH(PPh3)C(O)R”] (R = Me, Ph) and (2) with the same ylide and NaClO4 to form [Au“CH(PPh3)C(O)R”2]ClO4 (R = Me, Ph). The latter species react with chlorine to give trans-[AuCl2“CH(PPh3)C(O)R”2]ClO4 (R = Me), and with [Au(acac)(PPh3)] (molar ratio 12) to give [Au“C(AuPPh3)-(PPh3)C(O)R”2]ClO4 (R = OMe, OEt). The phosphonium salts [Ph3PCH2C(O)R]-ClO4 react with [Au(acac)(EPh3)] (acac = acetylacetonate) in 11 or 12 molar ratio to give, respectively, [Au“CH(PPh3)C(O)R”(PPh3)]ClO4 (R = Me, Ph) or [“Au(EPh3)”2“μ-C(PPh3)C(O)R”]ClO4 (E = P, R = Me, Ph; E = As, R = Me).