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Issue 11, 1989
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Mesitylgold(I) complexes. Crystal structures of NEt4[Au(mes)CI] and [N(PPh3)2][(mes)Au(CN)Au(mes)]


Arylation of [AuCl(tht)](tht = tetrahydrothiophene) with [{Ag(mes)}4](mes = mesityl) gives [{Au(mes)}5]. Both the silver and gold complex can be used for the syntheses of mono- or bi-nuclear cationic, neutral, or anionic mesitylgold complexes of the form Au(mes) L [L = PPh3, PPh2Me, P(OPh)3, or ½(Ph2PCH2PPh2), [{Au(PPh3)}2(µ-mes)]CIO4, Q[Au(mes)X](Q = NEt4 or NBu4; X = C6F5 or Cl), or [N(PPh3)2][(mes)Au(CN)Au(mes)]. The structures of NEt4[Au (mes) Cl] and [N(PPh3)2][(mes)Au(CN)Au(mes)] have been determined by single-crystal X-ray methods. The complex NEt4[Au(mes)CI] crystallizes in space group P21/n with a= 8.526(1), b= 13.917(2), c= 16.457(2)Å, β= 101. I 4(1)°, and Z= 4; R 0.038 for 2 656 unique observed reflections. The Au–Cl bond is long and the Au–C bond short [2.328(2) and 2.018(7)Å respectively]. The complex [N(PPh3)2][(mes)Au(CN)Au(mes)] crystallizes in space group C2/c with a= 27.702(8), b= 12.318(4), c= 20.501(6)Å, β= 135.61(1)°, and Z= 4; R 0.037 for 3 576 unique observed reflections. The anion and the cation both have imposed crystallographic two-fold symmetry, and the bridging CN group must therefore be disordered. The Au–C(mesityl) bond length is 2.035(11)Å.

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Article type: Paper
DOI: 10.1039/DT9890002127
J. Chem. Soc., Dalton Trans., 1989, 2127-2131

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    Mesitylgold(I) complexes. Crystal structures of NEt4[Au(mes)CI] and [N(PPh3)2][(mes)Au(CN)Au(mes)]

    R. Usón, A. Laguna, E. J. Fernández, M. E. Ruiz-Romero, P. G. Jones and J. Lautner, J. Chem. Soc., Dalton Trans., 1989, 2127
    DOI: 10.1039/DT9890002127

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