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文本合成了一系列长链季铵盐稀土十一配位双核络合物,经元素分析证明它们的组成可用简式[(CH_3)_3C_(16)H_(33)N]_2Ln(NO_3)_5表示,其中Ln代表La,Ce,Pr,Nd,sm,Eu,Gd,Ho,Er及Y,并对络合物的热谱、磁性以及它在乙醇溶液中的解离情况进行了研究。用四圆衍射仪测定了[(CH_3)_3C_(16)H_(33)N]_2Nd(NO_3)_5的分子及晶体结构。晶体属三斜晶系,空间群,中心离子钕与五个硝酸根以双齿形式配位,两个钕的络阴离子又通过硝酸根上的氧桥相联,形成一个双核络阴离子。因此钕的配位数为11,十一个Nd—O键的平均键长为2.569。四个[(CH_3)_3C_(16)H_(33)N]~+处于双核络阴离子的外界。实际上分子在晶体内应表示为[(CH_3)_3C_(16)H_(33)N]_4Nd_2(NO_3)_(10)。
Text Synthesis of a series of long-chain quaternary ammonium salt of rare earth eleven coordinated binuclear complexes, elemental analysis proved that their composition can be used to simplify the formula [(CH_3) _3C_ (16) H_ (33) N] _2Ln (NO_3) _5 , Where Ln represents La, Ce, Pr, Nd, Sm, Eu, Gd, Ho, Er and Y. The thermal and magnetic properties of the complex and its dissociation in ethanol solution were investigated. The molecular and crystal structure of [(CH_3) _3C_ (16) H_ (33) N] _2Nd (NO_3) _5 was measured by four-circle diffractometer. Crystal is a triclinic, space group, the center of the neodymium and five nitrate in the bidentate form of coordination, the two neodymium and anion through the nitrate on the oxygen bridge connected to form a binuclear anions. Therefore, the coordination number of neodymium is 11, and the average bond length of eleven Nd-O bonds is 2.569. Four [(CH_3) _3C_ (16) H_ (33) N] ~ + are outside the binuclear anions. In fact, the molecule in the crystal should be expressed as [(CH_3) _3C_ (16) H_ (33) N] _4Nd_2 (NO_3) _ (10).