1,4-DILITHIO-1,2,3,4-TETRAPHENYL-BUTADIENE - CRYSTAL-STRUCTURE OF THE 1,2-DIMETHOXYETHANE ADDUCT

被引：21

作者：

PAUER, F ^{[1
]}

POWER, PP ^{[1
]}

机构：

[1] UNIV CALIF DAVIS,DEPT CHEM,DAVIS,CA 95616

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1994年 / 474卷 / 1-2期

关键词：

CRYSTAL STRUCTURE; X-RAY DIFFRACTION; ALKENE; LITHIUM; GROUP-1; METALLACYCLE;

D O I：

10.1016/0022-328X(94)84041-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The crystal structure of Li2C4Ph4 . 2DME (1, DME = 1,2-dimethoxyethane) is reported. In the solid state it is monomeric owing to the chelating properties of the bidentate donor solvent. The butadiene backbone exhibits cis-geometry with two essentially localized C-C double bonds, separated by a C-C single bond. The lithium ions coordinate on opposite sides of the C4-backbone. They show short contacts to the terminal C-atoms of the butadiene moiety and significantly longer ones to the central C-atoms. No interactions between the Li+ ions and the phenyl rings were observed. Crystal data (Mo-Kalpha radiation) at -120-degrees-C for 1 . 0.5C5H12: a = 1036.5(4) pm, b = 1084.0(5) pm, c = 1709(1) pm, alpha = 105.11(4)-degrees, beta = 103.25(4)-degrees, gamma = 97.51(4)-degrees, triclinic, space group P1BAR, R = 0.083 for 3727 (F > 6sigma(F)) data.

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页码：27 / 30

页数：4

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