4.5 Article

Alkynyl derivatives of gold complexes containing C6H3-5-Me-2-EPh2 (E = P, As) ligands

期刊

JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 695, 期 14, 页码 1787-1793

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ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2010.03.027

关键词

Gold alkynyl compound; Arsenic ligand; Mossbauer spectroscopy

资金

  1. JSPS and ARC [FY2003-FY2004]
  2. Inter-University Joint Program

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[Au2Cl2{mu-2,2'-Ph2As(5,5'-Me2C6H3C6H3)AsPh2}] reacts with phenylacetylene or ethynylferrocene to give the corresponding digold(I) bis(alkynyl) derivatives [Au-2(C CR)(2){mu-2,2'-Ph2As(5,5'-Me2C6H3C6H3)AsPh2}] [R = Ph (4), Fc (5)]. In contrast, products resulting from the reaction with 1,3- or 1,4-diethynylbenzene (deb) depend markedly on the dichlorodigold(I) complex to ligand ratio. When an excess of alkyne is used, the expected bis(alkynyl) complexes [Au2X2{mu-2,2'-Ph2As(5,5'-Me2C6H3C6H3)AsPh2}] [X = 1,3-deb (6), 1,4-deb (7)] are obtained, but when using a 1:1 molar ratio poorly soluble, presumably polymeric, species are formed. Attempts to prepare a digold(II) bis(alkynyl) derivative by treatment of [Au2Cl2(mu-C6H3-5-Me-2-PPh2)(2)] with ethynylferrocene in the presence of NaOMe gives a mixture of species, the recrystallization of which yielded a crystal of [{2-(FcC C)-4-MeC6H3PPh2}Au(C CFc)] (1). The reaction of [Au2Cl2(mu-C6H3-5-Me-2-AsPh2)(2)] with phenylacetylene, 1,3- or 1,4-deb gives a mixture of unidentified products. (C) 2010 Elsevier B.V. All rights reserved.

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