Tris(amido)tingold complexes in different oxidation states: first structural characterization of a Sn-Au-Au-Sn linear chain

Findeis, B. and Contel, M. and Gade, L. H. and Laguna, M. and Gimeno, M. C. and Scowen, I. J. and McPartlin, M. (1997) Tris(amido)tingold complexes in different oxidation states: first structural characterization of a Sn-Au-Au-Sn linear chain. Inorganic Chemistry, 36 (11). pp. 2386-2390. ISSN 0020-1669

Full content URL: http://dx.doi.org/10.1021/ic9613218

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Item Type:Article
Item Status:Live Archive

Abstract

The reaction of MeSi{Me2SiN(Li)(p-tol)}3(Et2O)2 with SnCl2 in a 1:1 molar ratio leads the tris(amido)stannate MeSi{Me2SiN(p-tol)}3SnLi(Et2O) (1), which further reacts with neutral AuCl(PPh3) and anionic PPNAuCl2, PPNAuRCl (R = C6F5. mes), and chlorogold(I) complexes yielding Au(MeSi{Me2SiN(p-tol)}3Sn)(PPh3) (2) and PPNAu(MeSi{Me2SiN(p-tol)}3Sn)2 (3) and Au(MeSi{Me2SiN(p-tol)}3Sn)(R) (R = C6F5, 4; R = mes, 5), respectively. The reaction of 1 with the dinuclear gold(II) derivative Au2(CH2PPh2CH2)2Cl 2 in a 1:2 ratio affords Au2(CH2PPh2CH2)2(Me 2i{Me2SiN(p-tol)}3Sn)2 (6). In a similar way but starting from PPNAu(C6F5)3,Cl and reacting with 1 in a 1:1 ratio, the Au(III) complex PPNAu(MeSi{Me2SiN(p-tol)}3Sn)(C6F 5)3 (7) has been obtained. X-ray crystal structure analyses were performed for compounds 2 and 6, establishing the Sn-Au bonds d(Au-Sn) = 2.5651(13) and 2.6804(13) Ã , respectively). Compound 6 has a nearly linear Sn-Au-Au-Sn array and features the first examples of tin-gold(II) bonds.

Keywords:Chemistry
Subjects:F Physical Sciences > F100 Chemistry
Divisions:College of Science > School of Chemistry
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ID Code:13088
Deposited On:19 Mar 2014 18:54

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