详细信息
一个新颖的三维异核锑(Ⅲ)-镨(Ⅲ)配合物[Sb_2-μ_4-(EDTA)_2Pr(H_2O)_5]NO_3·4H_2O的合成、晶体结构及热分解研究
Synthesis,Crystal Structure and Thermal Decomposition of a Novel 3D Heterometallic Sb(Ⅲ)-Pr(Ⅲ) Complex [Sb_2-μ_4-(EDTA)_2Pr(H_2O)_5]NO_3·4H_2O
文献类型:期刊文献
中文题名:一个新颖的三维异核锑(Ⅲ)-镨(Ⅲ)配合物[Sb_2-μ_4-(EDTA)_2Pr(H_2O)_5]NO_3·4H_2O的合成、晶体结构及热分解研究
英文题名:Synthesis,Crystal Structure and Thermal Decomposition of a Novel 3D Heterometallic Sb(Ⅲ)-Pr(Ⅲ) Complex [Sb_2-μ_4-(EDTA)_2Pr(H_2O)_5]NO_3·4H_2O
作者:沈娟[1];蒋琪英[1];钟国清[1];贾玉庆[2];郁开北[3]
机构:[1]西南科技大学化学系,绵阳621010;[2]华东理工大学化学系,上海200237;[3]中国科学院成都分院,成都640041
年份:2007
卷号:65
期号:16
起止页码:1588
中文期刊名:化学学报
外文期刊名:Acta Chimica Sinica
收录:CSTPCD;;Scopus;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;
基金:四川省科技厅应用基础研究基金(No.05JY029-113);西南科技大学人才引进基金(No.ZK043129)资助项目.
语种:中文
中文关键词:锑(Ⅲ);镨(Ⅲ);配合物;晶体结构;氨基羧酸
外文关键词:antimony(Ⅲ);praseodymium(Ⅲ);complex;crystal structure;aminopolycarboxylic acid
摘要:合成了锑-镨与乙二胺四乙酸形成的新颖三维配合物[Sb2-μ4-(EDTA)2Pr(H2O)5]NO3·4H2O,用元素分析、红外光谱、热分析及X射线单晶衍射法等进行了组成和结构表征.结果表明该配合物属正交晶系,空间群Pnn2;晶胞参数:a=1.07031(2)nm,b=2.30805(4)nm,c=0.72343(2)nm,V=1.78711(7)nm3,Z=2,Dc=2.202g/cm3,F(000)=1164,μ=2.955mm-1,GOF=1.000,最终偏离因子R1=0.0203,wR2=0.0545[I>2σ(Ⅰ)].在标题化合物中,每个镨(Ⅲ)离子的配位数为9,与五个水分子中的五个氧原子和四个羧基氧原子配位,形成三帽三角棱柱空间配位多面体.锑(Ⅲ)与EDTA离子中的四个氧原子和两个氮原子配位,在赤道平面上有一孤对电子.同时讨论了配合物的热分解过程.
A novel 3D EDTA-linked(EDTA=ethylenediamine-N,N,N',N'-tetraacetate)heterometallic antimony-praseodymium complex [Sb2-μ4-(EDTA)2Pr(H2O)5]NO3?4H2O has been synthesized and characterized by elemental analysis,FT-IR spectrum,TG-DSC and X-ray diffraction analyses.It crystallizes in the orthorhombic system,space group Pnn2 with α=1.07031(2)nm,b=2.30805(4)nm,c=0.72343(2)nm,V=1.78711(7)nm^3,Z=2,Dc=2.202 g/cm^3,F(000)=1164,μ=2.955 mm^-1,GOF=1.000,the final R1= 0.0203 and wR2=0.0545 [I〉2σ(I)].In the title complex,the Pr(Ⅲ)ion is nine-coordinated.The coordination polyhedron around each praseodymium atom is a distorted tricapped trigonal prism with four oxygen atoms from four carboxylic groups and five oxygen atoms from five H2O molecules.The Sb(Ⅲ)ion is coordinated by two N atoms and four O atoms from an EDTA,together with a lone electron pair in the equatorial position.It shows the possible pyrolysis reactions of experimental and calculated percentage mass losses in the thermal decomposition process.
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