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Crystal Structures and Thermal Properties of Two Transition-Metal Compounds {[Ni(DNI)2(H2O)3][Ni(DNI)2 (H2O)4]}·6H2O and Pb(DNI)2(H2O)4 (DNI = 2,4-Dinitroimidazolate)
Journal of Chemical Crystallography ( IF 0.4 ) Pub Date : 2009-10-15 , DOI: 10.1007/s10870-009-9646-5
Guo-Fang Zhang 1 , Mei-Yu Cai , Ping Jing , Chong He , Ping Li , Feng-Qi Zhao , Ji-Zhen Li , Xue-Zhong Fan , Seik Weng Ng
Affiliation  

Two transition-metal compounds derived from 2,4-dinitroimidazole, {[Ni(DNI)2(H2O)3][Ni(DNI)2(H2O)4]}·6H2O, 1, and Pb(DNI)2(H2O)4, 2, were characterized by elemental analysis, FT-IR, TG-DSC and X-ray single-crystal diffraction analysis. Crystal data for 1: monoclinic, space group C2/c, a = 26.826(3), b = 7.7199(10), c = 18.579(2) Å, β = 111.241(2)° and Z = 4; 2: monoclinic, space group C2/c, a = 6.5347(6), b = 17.1727(17), c = 14.1011(14) Å, β = 97.7248(10) and Z = 4. Compound 1 contains two isolated nickel centers in its structure, one being six-coordinate and another five-coordinate. The structure of 2 contains a lead (II) center surrounded by two chelating DNI ligands and four water molecules in distorted square-antiprism geometry. The abundant hydrogen bonds in two compounds link the molecules into three-dimensional network and stabilize the molecules. The TG-DSC analysis reveals that the first step is the loss of water molecules and the final residue is the corresponding metal oxides and carbon.Graphical AbstractTwo compounds derived from 2,4-dinitroimidazole, {[Ni(DNI)2(H2O)3][Ni(DNI)2(H2O)4]}·6H2O, 1, and Pb(DNI)2(H2O)4, 2, were characterized by elemental analysis, FT-IR, TG-DSC and X-ray single-crystal diffraction analysis. The compound 1 contains two isolated nickel centers and 2 is an eight-coordinate lead (II) compound with a distorted square antiprism geometry.

中文翻译:

两种过渡金属化合物 {[Ni(DNI)2(H2O)3][Ni(DNI)2 (H2O)4]}·6H2O 和 Pb(DNI)2(H2O)4 (DNI = 2,4-二硝基咪唑酯)

两种衍生自 2,4-二硝基咪唑的过渡金属化合物,{[Ni(DNI)2(H2O)3][Ni(DNI)2(H2O)4]}·6H2O,1 和 Pb(DNI)2(H2O) )4、2、通过元素分析、FT-IR、TG-DSC和X射线单晶衍射分析进行表征。晶体数据 1:单斜晶系,空间群 C2/c,a = 26.826(3),b = 7.7199(10),c = 18.579(2) Å,β = 111.241(2)°,Z = 4;2:单斜晶系,空间群 C2/c,a = 6.5347(6),b = 17.1727(17),c = 14.1011(14) Å,β = 97.7248(10),Z = 4。化合物 1 包含两个孤立的镍中心在其结构上,一个是六坐标,另一个是五坐标。2 的结构包含一个由两个螯合 DNI 配体和四个水分子包围的铅 (II) 中心,这些水分子呈扭曲的方形反棱镜几何结构。两种化合物中丰富的氢键将分子连接成三维网络并稳定分子。TG-DSC分析表明,第一步是水分子的损失,最终残留物是相应的金属氧化物和碳。图文摘要2,4-二硝基咪唑衍生的两种化合物,{[Ni(DNI)2(H2O)3 ][Ni(DNI)2(H2O)4]}·6H2O, 1 和 Pb(DNI)2(H2O)4, 2,通过元素分析、FT-IR、TG-DSC 和 X 射线单-晶体衍射分析。化合物 1 包含两个孤立的镍中心,2 是八坐标铅 (II) 化合物,具有扭曲的方形反棱镜几何形状。4-二硝基咪唑 {[Ni(DNI)2(H2O)3][Ni(DNI)2(H2O)4]}·6H2O, 1 和 Pb(DNI)2(H2O)4, 2分析、FT-IR、TG-DSC 和 X 射线单晶衍射分析。化合物 1 包含两个孤立的镍中心,2 是八坐标铅 (II) 化合物,具有扭曲的方形反棱镜几何形状。4-二硝基咪唑 {[Ni(DNI)2(H2O)3][Ni(DNI)2(H2O)4]}·6H2O, 1 和 Pb(DNI)2(H2O)4, 2分析、FT-IR、TG-DSC 和 X 射线单晶衍射分析。化合物 1 包含两个孤立的镍中心,2 是八坐标铅 (II) 化合物,具有扭曲的方形反棱镜几何形状。
更新日期:2009-10-15
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