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合成了二苯并-18-冠-6四溴合铟(Ⅲ)酸钾配合物,由元素分析确定该配合物的化学式为KInBr_4(C_(20)H_(24)O_6)2·H_2O,用X射线单晶衍射测定了该配合物的结构,晶体属单斜晶系,空间群C_2h~5—P2_1/n,晶胞参数为a=8.727(5),b=26.051(13),c=20.470(13),β=92.73(5)°,z=4,In(Ⅲ)与Br~-形成InBr_4~-配阴离子,K~+与一个二苯并-18-冠-6(DB18C6)以及一个水分子直接配合,配位数为7,另一个DB18C6以未被配合的分子形式存在于晶体中,水合二苯并-18-冠-6四溴合铟酸钾配合物晶体结构测定的实验结果为阐明在相应的萃取体系中DB18C6萃取KInBr_4的机理提供了必要的理论依据。
The complex of dibenzo-18-crown-6 tetrabromo-indium (Ⅲ) was synthesized and its chemical formula was determined as KInBr_4 (C_ (20) H_ (24) O_6) 2 · H_2O by elemental analysis. The crystal structure of the complex belongs to the monoclinic system C_2h ~ 5-P2_1 / n. The unit cell parameters are a = 8.727 (5), b = 26.051 (13), c = 20.470 (13), β = 92.73 (5) °, z = 4. In (Ⅲ) and Br ~ - form InBr_4 ~ - anions and K ~ + and a dibenzo-18-crown- One water molecule was directly coordinated with a coordination number of 7 and the other DB18C6 was present in the crystal as an uncomplexed molecular form. The crystal structure of the hydrated dibenzo-18-crown-6 potassium tetrabromobalate complex was determined The results provided the necessary theoretical basis for elucidating the mechanism of DB18C6 extraction of KInBr_4 in the corresponding extraction system.