previously demonstrated. Complexes of the form, (C5Me5)2An(X)(CHPPh3), with short thorium(IV)– and uranium(IV)–carbon(carbene) bonds have been synthesized from the reaction of (C5Me5)2An(X)(CH3) (An = Th, U; X = Cl, Br, or I) with the ylide, CH2═PPh3. The resulting uranium complexes feature the shortest uranium(IV)–carbon bonds reported to date. The molecular and electronic structure of the thorium p
尽管尚无f元素的亚烷基络合物,但先前已证明使用
磷光稳定的卡宾络合物可产生短的act系元素-碳键。(C 5 Me 5)2 An(X)(CHPPh 3)形式的配合物,具有短的((IV)-和
铀(IV)-碳(碳烯)键,已通过(C 5 Me 5)2的(X)(CH 3)(安=
钍,
铀; X =
氯,
溴,或I)与内鎓盐,CH 2 ═PPh 3。由此产生的
铀络合物具有迄今为止报道的最短的
铀(IV)-碳键。使用X射线晶体学,13 C NMR光谱和密度泛函理论计算,详细介绍了ano
磷酰胺稳定的卡宾配合物的分子和电子结构,并将其与met二甲i配合物进行了比较。