A SILICON-BRIDGED BIS(SUBSTITUTED CP) YTTRIUM COMPLEX

被引：19

作者：

MARSH, RE ^{[1
]}

SCHAEFER, WP ^{[1
]}

COUGHLIN, EB ^{[1
]}

BERCAW, JE ^{[1
]}

机构：

[1] CALTECH,BECKMAN INST,PASADENA,CA 91125

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1992年 / 48卷

关键词：

D O I：

10.1107/S0108270192001987

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

rac-Bis(tetrahydrofuran)lithium [bis(2-trimethylsilyl-4-tert-butyl-eta5-cyclopentadienyl)di-methylsilane]dichloroyttrate, [Li(C4H8O)2][Y(C26H48Si3)Cl2], M(r) = 755.87, triclinic, P1BAR, a = 13.110 (8), b = 17.163 (15), c = 20.623 (14) angstrom, alpha = 104.02 (7), beta = 99.38 (5), gamma = 100.24 (6)-degrees, V = 4326 (6) angstrom3, Z = 4, D(x) = 1. 16 g cm-3 , lambda(Mo Kalpha) = 0.71073 angstrom, mu = 15.86 cm-1, F(000) = 1608, room temperature, R = 0.056 for 6136 reflections with F-0(2) > 3sigma(F-0(2)) . There are two virtually identical molecules in the asymmetric unit. In each, the Y atom is tetrahedrally coordinated to a substituted Si-bridged bis(cyclopentadienyl) ligand and to two Cl ions in the cleft. The Li atom is 2.35 angstrom from each Cl ion, and two molecules of tetrahydrofuran are connected to the Li, completing its tetrahedral coordination.

引用

页码：1773 / 1776

页数：4

共 8 条

[1]

Cromer D T, 1974, INT TABLES XRAY CRYS, VIV, p[99, 149]

[2]

CROMER DT, 1974, INT TABLES XRAY CRYS, V4, P149

[3]

DUCHAMP DJ, 1964, AM CRYSTALLOGR ASS M, P29

[4]

JOHNSON CK, 1976, ORNL3794 REP