Tin(IV) and organotin(IV) complexes containing mono or bidentate N-donor ligands—I. 1-benzylimidazole derivatives
作者:Claudio Pettinari、Fabio Marchetti、Augusto Cingolani、Stefano Bartolini
DOI:10.1016/0277-5387(95)00384-3
日期:1996.4
interaction between 1-benzylimidazole, L, and several tin(IV) and organotin(IV) acceptors in diethyl ether or THF, gave 1 : 1 [(L)R3SnCl] (R = Me or Ph), 2 : 1 [(L)2RnSnX4−n] (R = Me, n = 2, X = Cl or Br; R = Et, Bu or Ph, n = 2, X = Cl, Br or I; (R = cy, n = 2, X = Br or I; R = Me, Ph or Bu, n = 0 or 1, X = Cl; R = Me, n = 0 or 1, X = Cl; R = Me, n = 0 or 1, X = I; n = 0, X = Br), [(L)2Ph2SnBrCl] and 4 : 1 [(L)4(CH3)2Sn]I2
发现在CHCl3中的三卤化物和四卤化物(IV)加合物:这些[(L)2RnSnX4-n]络合物最有可能保留六坐标构型。当n = 0或1时,它们不是通量的。119Sn NMR化学位移是与锡原子直接连接的取代基的数量和类型的函数。在二有机锡衍生物中,通过应用Lockhart和Holecek方程,使用耦合常数2 J 119 Sn-1 H和1 J 119 Sn-13 C来建立锡原子的立体化学,从而确定CSn的大小。得出C键角。