ladder. By contrast, for E = O, this synthetic approach yields the Li(2)O-templated tetramer [(THF)Li(2)[PhP(O)(N(t)Bu)(2)]](4).Li(2)O in THF or the tetramer [(Et(2)O)(0.5)Li(2)[PhP(O)(N(t)Bu)(2)]](4) in diethyl ether. The reaction of trimethylaluminum with PhP(E)(NH(t)Bu)(2) produces the complexes Me(2)Al[PhP(E)(N(t)Bu)(NH(t)Bu)] (E = S, Se), which were shown by X-ray crystallography to be N,E-chelated
膦酸二阴离子[PhP(E)(N(t)Bu)(2)](2-)(E = O,S,Se)的二
锂盐是通过[PhP(E)(NH( t)Bu)(2)]与
正丁基锂。通过用
碲氧化[Li(2)[PhP(N(t)Bu)(2)]]可以形成相应的
碲化物(E = Te)。X射线结构测定显示二聚结构[Li(THF)(2)[PhP(E)(N(t)Bu)(2)]](2),其中单体单元通过Li-E键连接。在E = Se或Te的情况下,但对于E = S则没有,跨环的Li-E相互作用也被观察到,从而形成了六阶梯形图。相比之下,对于E = O,此合成方法会生成Li(2)O模板化的四聚体[(THF)Li(2)[PhP(O)(N(t)Bu)(2)]](4)。 THF中的Li(2)O或
乙醚中的四聚体[(Et(2)O)(0.5)Li(2)[PhP(O)(N(t)Bu)(2)]](4)。