Several tritylium compounds [Ph3C][A] have been isolated by salt metathesis or halide abstraction reactions starting from Ph3C–X (X = halogen) and Lewis acids in good yields (A = BF4, BCl4, AlCl4, GaCl4, PF6, AsF6, SbF6, SbCl6, CHB11H5Cl6, CHB11Cl11, CHB11H5Br6, CF3COO, CF3SO3, N3). The structures of 15 tritylium salts bearing different types of weakly coordinating anions (A−) have been determined. The structures are discussed on the basis of ion pairing versus covalent bond formation and solid-state interactions in comparison with gas-phase data.
通过从 Ph3C-X(X = ;卤素)和
路易斯酸(A =
BF4、
BCl4、AlCl4、GaCl4、PF6、AsF6、SbF6、SbCl6、
CHB11H5Cl6、
CHB11Cl11、
CHB11H5Br6、CF3COO、CF3SO3、N3)为起点,通过盐代反应或卤化物萃取反应分离出了[Ph3C][A],并获得了良好的收率。我们确定了 15 种含有不同类型弱配位阴离子(A-)的三
锂盐的结构。根据离子配对与共价键形成以及固态相互作用与气相数据的比较,对这些结构进行了讨论。