solution, although much less so than their oxo analogues. The bimetallic imidoalkoxide, [W(NC6H4Me-4)(OC6H11)5Li2Cl(C6H11OH)}2]·C6H11OH, obtained from an attempted preparation of [W(NC6H4Me-4)(OC6H11)4], has been shown by a single-crystal X-ray diffraction study to have a dimeric structure analogous to the known rhenium oxoisopropoxide, [ReO(OPri)5Li2Cl(thf)}2]·2thf (thf = tetrahydrofuran). A tungsten(V)
X射线衍射研究表明,芳基
氨基醇盐[W(NC 6 H 4 Me-4)(OR)4 ](R = Me或Pr i)采用固态的双核,醇盐桥连结构。醇盐桥是不对称的[2.072(7)和2.181(6)Å,R = Me;2.029(4)和2.243(3)中,R = PR我]确定并与终端arylimido
配体共面的,长W-O键为反式的短W¯¯ N键[1.749(8)A,R =甲基; 1.738(4)Å,R = Pr i ]。质子NMR研究表明,这些结构在溶液中是动态的,尽管远不及它们的羰基类似物。双
金属亚
氨基醇盐,[W(NC 6 H 4 Me-4)(OC 6H 11)5 Li 2 Cl(C 6 H 11 OH)} 2 ]·C 6 H 11 OH,是从[W(NC 6 H 4 Me-4)(OC 6 H 11)4 ]的尝试制备中获得的,通过单晶X射线衍射研究已经显示,其具有类似于已知的氧代异丙氧基rh [[ReO(OPr