THE CRYSTAL-STRUCTURES OF (PPH4)2[TICL3(NSIME3)]2.CH3CN AND (PPH4)2[TICL4(OSPCL2)]2

被引：0
|
作者：
WOLLERT, R [1 ]
WOCADLO, S [1 ]
DEHNICKE, K [1 ]
GOESMANN, H [1 ]
FENSKE, D [1 ]
机构：
[1] UNIV KARLSRUHE,INST ANORGAN CHEM,W-7500 KARLSRUHE,GERMANY
来源：
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 1992年 / 47卷 / 10期
关键词：
DIMERIC TITANIUM COMPLEXES; SYNTHESIS; IR SPECTRA; CRYSTAL STRUCTURE;
D O I：
暂无
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
(PPh4)2[TiCl3(NSiMe3)]2.CH3CN has been prepared from [TiCl2(NSiMe3)]infinity with PPh4Cl in acetonitrile solution as yellow crystals. The compound crystallizes in the triclinic space group P1BAR with one formula unit per unit cell, 3447 observed unique reflections, R = 0.053. Lattice dimensions at 200 K: a = 1030(1), b = 1253(1), c = 1374(1) pm, alpha = 77.46(8)-degrees, beta = 73.93(8)-degrees, gamma = 69.99(9)-degrees. The structure consists of PPh4+ ions and centrosymmetric dimeric anions [TiCl3(NSiMe3)]22-, in which pentacoordinate titanium atoms are associated via the nitrogen atoms of the silylimido groups. (PPh4)2[TiCl4(OSPCl2)]2 has been prepared by the reaction of PPh4[OSPCl2] with titanium tetrachloride in CH2Cl2 solution as orange crystals. (Space group P1BAR, Z = 1, 3242 observed unique reflections, R = 0.033). Lattice dimensions at 193 K: a = 11 14.8(2), b = 1190.6(2), c = 1218.7(2) pm, alpha = 72.18(1)-degrees, beta = 85.45(1)-degrees, gamma = 69.19(1)-degrees. The structure consists of PPh4+ ions and centrosymmetric dimeric anions [TiCl4(OSPCl2)]22-, in which hexacoordinate titanium atoms are associated via two chlorine atoms. The OSPCl2 group is coordinated via the oxygen atom.
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页码：1386 / 1392
页数：7
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