一种新型镉(Ⅱ)配合物[Cd(H_(2)O)(BTC)]^(-)(C_(12)H_(14)N_(2))^(2+)Cl·(H_(2)O)的合成及结构研究

Synthesis and crystal structure of new Cd(Ⅱ)Complex[Cd(H_(2)O)(BTC)]-(C_(12)H_(14)N_(2))^(2+)Cl·(H_(2)O)

有机-金属框架材料(MOFs)具有较大的比表面积和独特的结构可调性,是现在气体吸附分离材料的研究热点,本文制备了新的均苯三甲酸镉配合物[Cd(H_(2)O)(BTC)]^(-)(C_(12)H_(14)N_(2))^(2+)Cl·(H_(2)O),通过元素分析、X-射线单晶衍射、热重分析(TG)、甲醇分子吸附-脱附等手段对配合物进行了表征。结果表明:该配合物属于单斜晶系,P21/n空间群,a=10.149 nm,b=14.411 nm,c=13.216 nm,V=1933.0 nm^(3),Z=4,R_(1)=0.0636,wR_(2)=0.1985,热稳定性较好(初始分解温度达300℃),具有多孔结构,对甲醇分子有吸附性能。

Metal-organic frameworks(MOFs)is the research hot issue of gas adsorption separation materials in the field of gas separation,because of its large specific surface area and structural adjustability.Complex[Cd(H_(2)O)(BTC)]^(-)(C_(12)H_(14)N_(2))^(2+)Cl·(H_(2)O)are synthesized and characterized by elemental analysis,singler crystal X ray diffraction and thermal analysis.The analysis reveals that:the complex belongs to monoclinic systems,space group P21/n,a=10.149 nm,b=14.411 nm,c=13.216 nm,V=1933.0 nm^(3),Z=4,R_(1)=0.0636,wR_(2)=0.1985,has excellent thermal stability(degration temperature is up to 300℃),The results of adsorption for MeOH that the complex is a kind of satisfactory porous material and has adsorption property for methanol molecule.