Employing Dianionic Macrocyclic Tetracarbenes To Synthesize Neutral Divalent Metal Complexes
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https://figshare.com/articles/dataset/Employing_Dianionic_Macrocyclic_Tetracarbenes_To_Synthesize_Neutral_Divalent_Metal_Complexes/2426308
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资源简介：
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.
创建时间：
2016-02-19
