Synthesis and structural characterization of gold-(I), -(III) and silver(I) complexes of the ylide ligand Ph3P=CHC(O)NMe2. Crystal structure of [(AuPPh3)2{μ-C(PPh3)C(O)NMe 2}]ClO4

José Vicente*, María Teresa Chicote, María Cristina Lagunas, Peter G. Jones

*Corresponding author for this work

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

The reaction between [AuCl(tht)] (tht = tetrahydrothiophene) and the ylide Ph3P=CHC(O)NMe2 gives [AuCl{CH(PPh3)C(O)NMe2}] 1, which reacts with chlorine to gives [AuCl3{CH(PPh3)C(O)NMe2}] 2 and with the same ylide and NaClO4 to form [Au{CH(PPh3)C(O)NMe2}2]ClO4 3. The analogous silver complex [Ag{CH(PPh3)C(O)NMe2}2]ClO4 4 is obtained by the reaction of AgClO4 with the ylide in molar ratio 1:2. The phosphonium salt [Ph3PCH2C(O)NMe2]ClO4 reacts with [Au(acac)(PPh3)] (acac = acetylacetonate) to gives [Au{CH(PPh3)C(O)NMe2}(PPh3)]ClO4 5 or [(AuPPh3)2{μ-C(PPh3)C(O)NMe 2}]ClO4 6 depending on the reaction conditions. The structure of 6 was confirmed by an X-ray diffraction study at -95 °C [space group P1, a = 11.572(3), b = 11.836(3), c = 21.627(7) Å, α = 78.29(2), β = 87.19(2), γ = 75.65(2)°, R = 0.076]; the Au⋯Au bond length is 2.938(1) Å.

Original languageEnglish
Pages (from-to)2579-2583
Number of pages5
JournalJournal of the Chemical Society, Dalton Transactions
Issue number10
DOIs
Publication statusPublished - 01 Dec 1991
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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