Synthesis and Characterization of N-Heterocyclic Carbene Complexes of Uranium(III)
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https://figshare.com/articles/dataset/Synthesis_and_Characterization_of_N_Heterocyclic_Carbene_Complexes_of_Uranium_III_/3350812
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资源简介：
Reaction of [((AdArO)3tacn)UIII] (1) or [((Me3Si)2N)3UIII] (3) with
tetramethylimidazol-2-ylidene (Me4IMC:) yields novel N-heterocyclic
carbene complexes [((AdArO)3tacn)UIII(Me4IMC:)] (2) and [((Me3Si)2N)3UIII(Me4IMC:)] (4). Uranium complexes 2 and 4 represent
the first examples of compounds with an N-heterocyclic carbene
ligand coordinated to a low-valent uranium center. The paramagnetic complexes 1, 2, and 4 were characterized by 1H NMR, UV−vis−NIR, and EPR spectroscopy as well as SQUID magnetization
measurements and X-ray diffraction analyses. DFT studies indicate
a significant degree of π-bonding in the U(III)−carbene entity.
创建时间：
2004-02-09
