Lithiated bis(diphenylphosphino)methane reacts with two equivalents of a dialkylchloro-alane or -gallane (R2MCl; R = CH3, C2H5; M = Al, Ga;) to form coordination compounds (3–6) which have peculiar structure and show unusual fluxional behaviour. A single crystal X-ray diffraction study of the compound ((C6H5)2P]2CH[(C2H5)2Al]2Cl (4) reveals that these complexes can be described as the unsymmetrical
锂化的双(二苯基膦基)甲烷与两当量的二烷基氯-铝烷或-gallane(R 2 MCl; R = CH 3,C 2 H 5; M = Al,Ga;)反应形成配位化合物(3-6)具有奇特的结构并表现出不寻常的通量行为。化合物((C 6 H 5)2 P] 2 CH [(C 2 H 5)2 Al] 2 Cl(4)的单晶X射线衍射研究表明,这些络合物可描述为不对称的加合物潜在的六电子供体的阴离子[PH 2 H博士2 ] -与双官能受体阳离子[的Et 2 AlClAlEt 2 ] +。通过P→Al和C→Al供体/受体键,生成五元环PCAlClAl,该五元环具有对于该环尺寸而言典型的包络构象,并且在阴离子的中心碳原子上具有手性中心。可变温度1 H,13 C,和31 P NMR光谱(在甲苯中)表明该受体部分R 2次MClMR 2出现经过围绕中心P上的旋转2 CAl键,从而使PPH 2通过断裂和重