【摘 要】
：
以五水硝酸铋、水杨酸、维生素B3为原料,摩尔比为1:2:1合成了一种新型的三元配合物.通过元素分析、摩尔电导、紫外光谱、红外光谱、热重与差热分析对其结构进行了表征,确定其
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以五水硝酸铋、水杨酸、维生素B3为原料,摩尔比为1:2:1合成了一种新型的三元配合物.通过元素分析、摩尔电导、紫外光谱、红外光谱、热重与差热分析对其结构进行了表征,确定其分子式为[Bi(C7H5O3)2C6H4NO2(H2O)2].2H2O.实验表明,水杨酸和烟酸均脱去羧基的质子形成羧酸根与Bi3+离子双齿配位.根据TG-DSC曲线可以看出,当温度为81oC时配合物开始分解,首先失去2个结晶H2O,接着失去2个水杨酸根,再失去1个烟酸根,最后残余物为Bi和Bi2O3的混合物.
A novel ternary complex was synthesized by the reaction of bismuth nitrate pentahydrate, salicylic acid and vitamin B3 with a molar ratio of 1: 2: 1. The effects of elemental analysis, molar conductance, UV, IR, The structure was characterized by differential thermal analysis, and its molecular formula was confirmed to be [Bi (C7H5O3) 2C6H4NO2 (H2O) 2] .2H2O. Experiments showed that the protons of salicylic acid and nicotinic acid all decarboxylated form the bis According to TG-DSC curve, we can see that when the temperature is 81oC, the complex begins to decompose, first lose two crystal H2O, then lose two salicylates, and then lose one nicotinate, the final residue is Bi And Bi2O3.
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