Employing Dianionic Macrocyclic Tetracarbenes To Synthesize Neutral Divalent Metal Complexes

被引：50

作者：

Bass, Heather M. ^{[1
]}

Cramer, S. Alan ^{[1
]}

McCullough, Alexander S. ^{[1
]}

Bernstein, Karl J. ^{[1
]}

Murdock, Christopher R. ^{[1
]}

Jenkins, David M. ^{[1
]}

机构：

[1] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

来源：

ORGANOMETALLICS | 2013年 / 32卷 / 07期

基金：

美国国家科学基金会;

关键词：

HOMOLEPTIC CARBENE COMPLEXES; SPIN-CROSSOVER BEHAVIOR; IRON NITRIDO COMPLEX; C-H ACTIVATION; COORDINATION CHEMISTRY; IMIDO COMPLEX; ELECTRONIC-STRUCTURE; SCORPIONATE LIGANDS; COBALT(III) IMIDO; NMR-SPECTROSCOPY;

D O I：

10.1021/om400043z

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Macrocyclic tetraimidazolium diborate ligand precursors with two different ring sizes have been synthesized by ring-forming reactions between diimidazoles and haloboranes. Deprotonation of the macrocyclic tetraimidazoliums with n-butyllithium followed by the addition of divalent metal salts of palladium or nickel leads to macrocyclic tetracarbene complexes with an 18-atom macrocycle, but not the 16-atom variant. These neutral palladium and nickel complexes are the first examples of macrocyclic tetracarbene diborate complexes, and unlike their cationic counterparts, they are highly soluble in nonpolar solvents. All macrocyclic tetraimidazoliums and their corresponding metal complexes were characterized by single-crystal X-ray diffraction and spectroscopic techniques.

引用

页码：2160 / 2167

页数：8

共 90 条

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