New zirconocene pseudohalogeno complexes. Crystal structure of mu-oxo-bis[bis(cyclopentadienyl)isocyanatozirconium(IV)], [{Zr(eta(5)-C5H5)(2)(NCO)}(2)O]

被引：5
作者：
Klouras, N [1 ]
Tzavellas, N [1 ]
Raptopoulou, CP [1 ]
机构：
[1] NRCPS DEMOKRITOS,INST SCI MAT,GR-15310 AGHIA PARASKEVI,ATHENS,GREECE
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1997年 / 623卷 / 06期
关键词：
zirconium; cyclopentadienyl; metallocenes; pseudohalides; ore-bridge; crystal structure;
D O I：
10.1002/zaac.199762301161
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The isothiocyanato complexes [Zr(eta(5)-C5H4Me)(2)(NCS)(2)] and [Zr(eta(5)-(C5H4Bu)-Bu-t)(2)(NCS)(2)] have been prepared from the corresponding zirconocene dichlorides and KSCN in acetone. Analogous reactions with KOCN or KSeCN, led to the formation of the stable dinuclear ore-bridged complexes [(Zr(eta(5)-C5H5)(2)(NCO))(2)O] and [(Zr(eta(5)-C5H4Me)(2)(NCSe))(2)O], respectively. The molecular structure of [(Zr(eta(5)-C5H5)(2)(NCO)](2)O] has been determined by X-ray diffraction methods and consists of two (eta(5)-C5H5)(2)Zr(NCO) units linked by an oxo bridge. The Zr-O-Zr bridge [angle 165.7(2)degrees] is non linear. The relatively short Zr-O bond lengths of 1.949(3) and 1.942(3) Angstrom support the presence of partial double-bond character. The compound contains N-coordinated cyanato ligands which are almost linear.
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收藏
页码：1027 / 1031
页数：5
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