SYNTHESIS AND CHARACTERIZATION OF TANTALUM(V) DICARBOLLIDE COMPLEXES

被引：52

作者：

UHRHAMMER, R ^{[1
]}

CROWTHER, DJ ^{[1
]}

OLSON, JD ^{[1
]}

SWENSON, DC ^{[1
]}

JORDAN, RF ^{[1
]}

机构：

[1] UNIV IOWA, DEPT CHEM, IOWA CITY, IA 52242 USA

来源：

ORGANOMETALLICS | 1992年 / 11卷 / 09期

关键词：

D O I：

10.1021/om00045a026

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of TaCl5 with Li2C2B9H11 in toluene yields (C2B9H11)TaCl3 (1). Molecular weight measurements for 1 indicate a monomeric structure in benzene solution. X-ray diffraction reveals a distorted-octahedral/three-legged piano-stool structure for 1. Data for 1: a = 6.84 (1) angstrom, b = 9.614 (2) angstrom, c = 19.073 (3) angstrom, beta = 92.37 (3)-degrees, V = 1252 (2) angstrom3, Z = 4 in space group P2(1)/c. Reaction of 1 with TlCp' (Cp' = C6H4Me) in CH2Cl2 yields the bent metallocene CP'(C2B9H11)TaCl2 (2). X-ray diffraction reveals a distorted-tetrahedral structure for 2, isostructural with group 4 metallocenes. Data for 2: a 9.519 (4) angstrom, b = 12.752 (6) angstrom, c = 7.016 (2) angstrom, alpha = 97.16 (3)-degrees, beta = 109.76 (3)-degrees, gamma = 94.15 (4)-degrees, V = 789 (1) angstrom3, Z = 2 in space group P1BAR. Reaction of CpTaCl4 with Li2C2B9H11 yields CP(C2B9H11)TaCl2 (3, Cp = C5H5. Alkylation of 1 with MeMgBr Yields (C2B9H11)TaMe3 (4). Alkylation of 2 with MeMgBr yields CP'(C2B9H11)TaMe2 (5).

引用

页码：3098 / 3104

页数：7

共 58 条

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