新型异金属铁-铀酰有机框架化合物的合成、晶体结构及性能研究  

Synthesis,Crystal Structure and Properties of Fe-Uranyl Heterometallic Organic Framework

作　　者：吴红燕[1] 罗菊香[2] 张建汉 WU Hong-yan;LUO Ju-xiang;ZHANG Jian-han(School of Resource and Chemical Engineering,Sanming University,Sanming 365004,China)

机构地区：[1]三明学院资源与化工学院 [2]三明学院,福建三明365004

出　　处：《通化师范学院学报》2020年第6期42-49,共8页Journal of Tonghua Normal University

基　　金：福建省中青年教师教育科研项目(JAT170549);国家自然科学基金项目(51703120).

摘　　要：该文以硝酸双氧铀和氯化亚铁为金属源,以对苯二甲酸为主配体,邻菲啰啉为辅助配体,在水热条件下,成功地设计并合成了一例新的异金属铁-铀酰有机框架化合物,即{[Fe(phen)3][(UO2)2(BDC)3]·2H2O}n,利用X-射线粉末衍射、单晶X-射线衍射、红外光谱、固体紫外-可见漫反射光谱对该有机框架化合物进行了基本表征.结果表明,所合成化合物属于六方晶系,空间群为P6522,晶体学数据为:a=19.6150(9)Å,b=19.6150(9)Å,c=28.639(3)Å,α=90°,β=90°,γ=120°,V=9542.4(12)Å3,Z=6,Dc=1.751 g·cm^–3,μ=5.378 mm^–1,F(000)=4800.0,R=0.0387,ωR=0.0847.该化合物是由阳离子客体[Fe(phen)3]n2n+、二维聚阴离子[(UO2)2(BDC)3]n2n-通过分子内和分子间的O-H…O氢键相互作用形成的三维超分子网络结构.A new Fe-uranyl heterometallic organic framework was obtained under hydrothermal method by using uranyl nitrate,Iron(Ⅱ)chloride tetrahydrate,benzene-1,4-dicarboxylate and phenanthroline,namely{[Fe(phen)3][(UO2)2(BDC)3]·2H2O}n..The characterization of the compound was carried out by PXRD,single-crystal X-ray diffraction,FT-IR spectroscopy,UV-Vis diffuse reflection spectrum.The results show that the compound crystallizes in the hexagonal system,space group is P6522 with a=19.6150(9)Å,b=19.6150(9)Å,c=28.639(3)Å,α=90°,β=90°,γ=120°,V=9542.4(12)Å3,Z=6,Dc=1.751 g·cm^-3,μ=5.378 mm^-1,F(000)=4800.0,R=0.0387,ωR=0.0847.The compound is composed of cationic guest[Fe(phen)3]n2n+,two-dimensional polyanion[(UO2)2(BDC)3]n2n-through the inter-and intramolecular hydrogen(O-H···O)bonding interactions to form a three-dimensional supramolecular network structure.

关 键 词：异金属铁-铀酰有机框架化合物 合成 晶体结构 晶体性能 

分 类 号：O62[理学—有机化学]