STRUCTURE OF A ZIRCONOXYBORANE HAVING A ZR-F-C BRIDGE

被引：122

作者：

SIEDLE, AR ^{[1
]}

NEWMARK, RA ^{[1
]}

LAMANNA, WM ^{[1
]}

HUFFMAN, JC ^{[1
]}

机构：

[1] INDIANA UNIV, DEPT CHEM, CTR MOLEC STRUCT, BLOOMINGTON, IN 47405 USA

来源：

ORGANOMETALLICS | 1993年 / 12卷 / 05期

关键词：

D O I：

10.1021/om00029a002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of [Et3NH][(C6F5)3BOH] with (Me5C5)2ZrMe2 produces methane and (Me5C5)2ZrOB-(C6F5)3. Crystal data (at -175-degrees-C): P2(1)/n, a = 11.197(2) angstrom, b = 16.076(4) angstrom, c = 19.598(5) angstrom, beta = 93.90(0)-degrees, Z = 4. The structure reveals a (C6F5)3B-O moiety coordinated to zirconium. One of the C6F5 groups is oriented so that its ortho fluorine form a Zr-F-C bridge. The F-19 NMR spectrum at -88-degrees-C reveals a static structure in which the shielded Zr-F-C fluorine resonates at -190.3 ppm. As the temperature is raised, all three C6F5 rings interconvert at the same rate in a process for which DELTAG(double dagger) = 10 +/- 0.5 kcal mol-1.

引用

页码：1491 / 1492

页数：2

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