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以碳酸锶为锶源,烟酸为配体合成了一种新的配合物Sr(C6H4NO2)2.3H2O。通过化学分析、元素分析、红外、热重和X-射线粉末衍射等手段对其组成、结构、性能进行了表征。结果表明烟酸以双齿桥式与Sr(Ⅱ)结合形成配合物;热分析结果显示该配合物的热分解过程包括失水、配体的氧化,最后完全分解为氧化物;分析测试结果表明该物质属于单斜晶系,晶胞参数为:a=16.282 5,b=13.345 4,c=35.285 7,β=111.682 7。
A new complex Sr (C6H4NO2) 2.3H2O was synthesized by using strontium carbonate as strontium source and nicotinic acid as ligand. Its composition, structure and properties were characterized by chemical analysis, elemental analysis, IR, TG and X-ray powder diffraction. The results show that niacin binds with Sr (Ⅱ) via bidentate bridge to form a complex. Thermal analysis results show that the thermal decomposition process of the complex includes water loss, oxidation of the ligand and finally complete decomposition into oxide. The analysis results show that The material belongs to the monoclinic system with unit cell parameters of a = 16.282 5, b = 13.345 4, c = 35.285 7, β = 111.682 7.