期刊
INORGANIC CHEMISTRY
卷 53, 期 2, 页码 694-696出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic402806x
关键词
-
资金
- German Israel Foundation [1076-68.5/2009]
Acid base reactions between imidazolin-2-imines (Im(R)NH) and [U(NMeEt)(4)] selectively afforded uranium(IV) imidazolin-2-iminato complexes of the type [U(NIm(tBu))(4)] (1), [U(NIm(Mes))(3)(NMeEt)] (2), and [U(NIm(Dipp))(2)(NMeEt)(2)] (3) depending on the steric demand of the substituents in the 1 and 3 positions of the imidazole heterocycle (R = tBu, Mes, Dipp). This new class of actinide complexes displays short UN bonds and nearly linear U-N-C bond angles, suggesting a U-N bond order higher than 1, as well as extraordinarily high catalytic activity in the polymerization of e-caprolactone.
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