Formation of the Imide [Ta(NMe2)3(μ-NSiMe3)]2 through an Unprecedented α-SiMe3 Abstraction by an Amide Ligand

被引：12
作者：
Sharma, Bhavna [1 ]
Chen, Shu-Jian [1 ]
Abbott, Julia K. C. [1 ]
Chen, Xue-Tai [2 ]
Xue, Zi-Ling [1 ]
机构：
[1] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA
[2] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China
来源：
INORGANIC CHEMISTRY | 2012年 / 51卷 / 01期
基金：
美国国家科学基金会;
关键词：
UNEXPECTED FORMATION; CRYSTAL-STRUCTURE; OXO COMPLEXES; METAL; TANTALUM; ALKYLIDENE; REACTIVITY; PRECURSORS; METATHESIS; NITRIDE;
D O I：
10.1021/ic2021676
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Ta(NMe2)(4)[N(SiMe3)(2)] (1) undergoes the elimination of Me3Si-NMe2 (2), converting the -N-(SiMe3)(2) ligand to the = NSiMe3 ligand, to give the imide "Ta(NMe2)(3)(=NSiMe3)" (3) observed as its dimer 4. CyN=C=NCy captures 3 to yield guanidinates Ta-(NMe2)(3-n)(=NSiMe3)[CyNC(NMe2)NCy](n) [n = 1 (5), 2 (6)]. The kinetic study of alpha-SiMe3 abstraction in 1 gives Delta H-double dagger = 21.3(1.0) kcal/mol and Delta S-double dagger = 17(2) eu.
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页码：25 / 27
页数：3
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