Heterolytic H2 activation mediated by low-coordinate L3Fe-(μ-N)-FeL3 complexes to generate Fe(μ-NH)(μ-H)Fe species

被引：94

作者：

Brown, SD ^{[1
]}

Mehn, MP ^{[1
]}

Peters, JC ^{[1
]}

机构：

[1] CALTECH, Div Chem & Chem Engn, Arnold & Mabel Beckman Labs Chem Synth, Pasadena, CA 91125 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 38期

关键词：

D O I：

10.1021/ja0544509

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The diiron μ-nitride complexes, {L3FeII(μ-N)FeIIL3}- and L3FeIII(μ-N)FeIIL3, heterolytically activate hydrogen (1 atm) at ambient temperature in solution (L3 = [PhB(CH2PPh2)3]-). These transformations lead to structurally unique {L3FeII(μ-NH)(μ-H)FeIIL3}- and L3FeIII(μ-NH)(μ-H)FeIIL3 products. X-ray data establish a marked reduction in the Fe-Fe distance upon H2 uptake, and spectroscopic data establish both FeIIFeII species to be diamagnetic, whereas the FeIIIFeII species, L3FeIII(μ-N)FeIIL3 and L3FeIII(μ-NH)(μ-H)FeIIL3, populate doublet ground states with thermally accessible higher spin states. Copyright © 2005 American Chemical Society.

引用

页码：13146 / 13147

页数：2