SYNTHESIS AND STRUCTURE OF [AU4(C6F5)2((PPH2)2CH)2(PPH3)2](CLO4)2.4CH2CL2, A COMPLEX WITH 2 DIRECT GOLD-GOLD BONDS

被引：15

作者：

GIMENO, MC

JIMENEZ, J

JONES, PG

LAGUNA, A

LAGUNA, M

机构：

[1] UNIV ZARAGOZA,CSIC,INST CIENCIA MAT ARAGON,DEPT QUIM INORGAN,E-50009 ZARAGOZA,SPAIN

[2] TECH UNIV CAROLO WILHELMINA BRAUNSCHWEIG,INST ANORGAN & ANALYT CHEM,D-38023 BRAUNSCHWEIG,GERMANY

来源：

ORGANOMETALLICS | 1994年 / 13卷 / 06期

关键词：

D O I：

10.1021/om00018a054

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The oxidative addition of chlorine or bromine to [Au4(C6F5)2{(Ph2P)2CH}2] leads to [AU4(C6F5)2{(Ph2P)2Ch}2X2] (X = Cl, Br). Displacement of chlorine by reaction with [Ag(OClO3)L] gives the cationic complexes [Au4(C6F5)2{(Ph2P)2CH}2L2] (ClO4)2 (L = tht, PPh3, PPh2Me, P(tol)3). The structure of the PPh3 derivative has been determined by single-crystal diffraction. It crystallizes with crystallographic 2-fold symmetry in the monoclinic space group C2/c: a = 17.670(3) angstrom, b = 25.484-(5) angstrom, c = 22.651(5) angstrom, beta = 93.86(2)-degrees, Z = 4, T = -100-degrees-C. Its backbone is a linear chain of three four-coordinated gold atoms, in which the central gold atom is bonded to the others with an Au-Au distance of 2.7305(11) angstrom. The formal charge of the Au3unit is +5, but integral oxidation states consistent with normal coordination geometry cannot be assigned.

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页码：2508 / 2511

页数：4

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