12-钨磷酸钙与丁二酰亚胺加合物的制备和性质研究

本文研究了12-钨磷酸钙与丁二酰亚胺和邻苯二甲酰亚胺的加合反应,制备了12-钨磷酸钙的丁二酰亚胺加合物Ca_(3/2)PW_(12)O_(40)·4(CH_2CO)_2NH·7H_2O,测定了加合物的红外光谱、拉曼光谱和热重差热分析曲线,用X射线粉末衍射方法研究了加合物的结晶学特征.结果表明.配体丁二酰亚胺以一个羰基氧与金属阳离子配位,加合物的形成对杂阴离子的Kcggin结构没有明显影响.但WO_6八面体发生一定的畸变.其中W-O_d键减弱,W-O_c键增强.加合物属单斜晶系,晶胞参数为:a=25.839(6).b=13.223(2),c=18.438(2)(?),β=97.06(2)°,V=6251.88(?)~3,可能的空间群为C_2h~5-P2_1/c或C_2h~2-P2_1/m或C_2~2-P2_1,品质因子F_(30)=54(0.012,45).

SYNTHESIS AND PROPERTIES OF ADDUCT BETWEEN CALCIUM DODECATUNGSTOPHOSPHATE WITH SUCCINIMIDE

This paper reports the synthesis of adduct between calcium dodccatungstophosphate with succinimidc. The properties were characterized by IR, Raman spectra, TG-DTA thermal analysis, and X-ray powder diffraction analysis. The compound is monoclinic with crystal data: a=25.839(6), b=13.223(2), c=18.438(3)Å, 0=97.06(2)° , V=6251.88ų. The possible group is C_2h⁵-P2₁/c or C_2h²-P2₁/m or C₂²-P2₁. The figure of merit F30=54(0.012, 45). Because of its large stcro effect, the ligand succinimidc coordinates to the cation with only one oxygen of the two C=O bonds, causing the ν_c=o vibration peak splits into three pcaks, and the coordination number of cation decreases from six in DMF adducts to three.