Synthesis, structural characterization and ethylene polymerization behavior of complex [Ph4P][CrCl3{HB(pz)3}] [HB(pz)3 = hydrotris(1-pyrazolyl)borate]

被引：27
|
作者：
Rojas, R
Valderrama, M
Wu, G
机构：
[1] Pontificia Univ Catolica Chile, Fac Quim, Dept Quim Inorgan, Santiago 22, Chile
[2] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA
来源：
INORGANIC CHEMISTRY COMMUNICATIONS | 2004年 / 7卷 / 12期
关键词：
chromium; hydrotris(1-pyrazolyl)borate complexes; ethylene polymerization; synthesis;
D O I：
10.1016/j.inoche.2004.10.007
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Reaction of CrCl3(THF)(3) with K[HB(pz)(3)] in THF leads to the formation of the complex K[CrCl3{HB(pz)(3)}] (1). The salt metathesis of complex 1 with [Ph4P]Br in CH2Cl2 yields the complex [Ph4P][CrCl3{HB(pz)(3)}](2). The structure of complex 2 . CHCl3 has been determined by single crystal X-ray diffraction. In the anion the metal centre shows a distorted octahedral geometry with the hydrotris(1-pyrazolyl)borate bonded as N,N',N"-donor tripod ligand and three chloride atoms completing the co-ordination sphere. Complex 2 in the presence of MAO leads to the formation of an active catalyst for the polymerization of ethylene. (C) 2004 Elsevier B.V. All rights reserved.
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页码：1295 / 1297
页数：3
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