Synthesis and X-ray structure of [NBu(4)][{Pt(C6F5)(2)}(2)(mu-C6F5)(2){mu-Ag(SC4H8)}] (SC4H8=tetrahydrothiophene). Evidence of the existence of intramolecular Ag center dot center dot center dot F interactions in solution and in the solid state

被引:13
作者
Casas, JM [1 ]
Fornies, J [1 ]
Martin, A [1 ]
Menjon, B [1 ]
Tomas, M [1 ]
机构
[1] UNIV ZARAGOZA,CSIC,INST CIENCIA MAT ARAGON,DEPT QUIM INORGAN,E-50009 ZARAGOZA,SPAIN
关键词
D O I
10.1016/0277-5387(96)00070-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The title complex (2) has been synthesized by 1:1 reaction of [NBu(4)](2)[{Pt(C6F5)(2)}(2)(mu-C6F5)(2)] with [Ag(OClO3)(SC4H8)] in CH2Cl2. The structure of 2 . 0.5C(6)H(14) has been determined by single-crystal X-ray diffraction methods. Complex 2 contains two Pt-Ag bonds unsupported by other covalent bridges [Pt(1)-Ag = 2.799(1), Pt(2)-Ag = 2.824(1) Angstrom]. The platinum atoms are bridged by two pentafluorophenyl groups and the silver atom. The bridging pentafluorophenyl groups are oriented in such a way that the silver atom makes short contacts with two of their ortho-fluorine atoms [Ag...F(30) = 2.643(5), Ag...F(32) = 2.716(6) Angstrom]. These o-F...Ag contacts can also be observed in the F-19 NMR spectrum of 2. This is the first time that such contacts have been detected in solution. Copyright (C) 1996 Elsevier Science Ltd
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页码:3599 / 3604
页数:6
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