Comparing the isoelectronic complexes [RuTp(CH3CN)3]PF6 (Tp = hydridotris(pyrazolyl)borate) and [RuCp(CH3CN)3]PF6.: Structure and acetonitrile exchange kinetics

被引：55

作者：

Rüba, E

Simanko, W

Mereiter, K

Schmid, R

Kirchner, K

机构：

[1] Tech Univ Vienna, Inst Inorgan Chem, A-1060 Vienna, Austria

[2] Tech Univ Vienna, Inst Mineral Crystallog & Struct Chem, A-1060 Vienna, Austria

来源：

INORGANIC CHEMISTRY | 2000年 / 39卷 / 02期

关键词：

D O I：

10.1021/ic991013k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The cationic trisacetonitrile complex [RuTp(CH3CN)(3)]PF6 has been obtained in 70% isolated yield by the reaction of RuTp(COD)Cl with NH4PF6 in boiling DMF/CH3CN. The CH3CN exchange kinetics has been studied by H-1 NMR as a function of temperature. The first-order rate constant of 1.2 x 10(-8) s(-1) (298 K) is very low compared to 5.6 s(-1) for the isoelectronic [RuCp(CH3CN)(3)]PF6, essentially because of a much higher energy of activation (37.2 vs 20.7 kcal mol(-1)).

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页码：382 / +

页数：4

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