基于2, 5-二甲基苯-1, 4-二亚甲基二膦酸的钴、镍同构化合物的水热合成及晶体结构

在水热条件下,利用2,5-二甲基苯-1,4-二亚甲基二膦酸（H₄L）与CoCl₂·6H₂O或NiSO₄·6H₂O反应得到2个同构的过渡金属有机膦酸化合物,[Co（H₂O）₄（H₂L）]_n（1）,[Ni（H₂O）₄（H₂L）]_n（2）,并用元素分析、红外光谱、粉末及单晶X-射线等方法对其进行了表征。晶体结构分析表明：化合物1和2都属于三斜晶系,空间群为P1,化合物1的晶胞参数为a=0.4970（2）nm,b=0.7113（3）nm,c=1.1778（5）nm,α=97.779（7）°,β=92.103（7）°,γ=107.217（6）°,V=0.3927（3）nm³,Z=2;化合物2的晶胞参数为a=0.49435（19）nm,b=0.7089（3）nm,c=1.1726（5）nm,α=97.919（6）°,β=92.130（6）°,γ=107.441（5）°,V=0.3870（3）nm³,Z=2。金属离子采取了八面体构型,6个配位氧原子分别来自2个反式构型的H₂L配体和4个配位水分子。每1个金属离子与2个反式构型的H₂L配体配位形成了一维线型链状结构。这2个化合物最终通过O-H…O氢键作用形成了三维结构。此外,对2个化合物的热稳定性也进行了研究。     

基于2,5-二甲基苯-1,4-二亚甲基二膦酸的钴、镍同构化合物的水热合成及晶体结构(英文)

在水热条件下,利用2,5-二甲基苯-1,4-二亚甲基二膦酸(H4L)与CoCl2·6H2O或NiSO4·6H2O反应得到2个同构的过渡金属有机膦酸化合物,[Co(H2O)4(H2L)]n(1),[Ni(H2O)4(H2L)]n(2),并用元素分析、红外光谱、粉末及单晶X-射线等方法对其进行了表征。晶体结构分析表明:化合物1和2都属于三斜晶系,空间群为P1,化合物1的晶胞参数为a=0.497 0(2)nm,b=0.711 3(3)nm,c=1.177 8(5)nm,α=97.779(7)°,β=92.103(7)°,γ=107.217(6)°,V=0.3927(3)nm3,Z=2;化合物2的晶胞参数为a=0.494 35(19)nm,b=0.708 9(3)nm,c=1.172 6(5)nm,α=97.919(6)°,β=92.130(6)°,γ=107.441(5)°,V=0.387 0(3)nm3,Z=2。金属离子采取了八面体构型,6个配位氧原子分别来自2个反式构型的H2L配体和4个配位水分子。每1个金属离子与2个反式构型的H2L配体配位形成了一维线型链状结构。这2个化合物最终通过O-H…O氢键作用形成了三维结构。此外,对2个化合物的热稳定性也进行了研究。     

Synthesis,Crystal Structure and Luminescent Properties of a Novel 1D Zigzag Chain Barium(Ⅱ) Coordination Polymer

A new coordination polymer {[Ba(L)(H2O)5]·H2O}n(1, H2 L = 3,3'-((((ethane-1,2-diylbis(oxy))-bis(2,1-phenylene))bis(methylene))bis(oxy))dibenzoic acid) has been synthesized under evaporation process and characterized by elemental analysis, IR spectra, TG analysis,fluorescence spectrum, powder X-ray diffraction analysis and single-crystal X-ray diffraction.Complex 1 crystallizes in the monoclinic system, space group P21/c, with a = 20.918(5), b =7.4539(2), c = 20.168(5) A, β = 95.486(2)o, V = 3130.1(1) A3, Z = 4, C30H34 Ba O14, Mr = 755.91, Dc =1.604 g/cm3, F(000) = 1528, μ = 1.34 mm-1, the final R = 0.0404 and w R = 0.0676 for all data.Single-crystal X-ray structural reveals that the Ba(II) ion adopts a nine-coordinated distorted tricapped trigonal prism coordination geometry. Adjacent Ba(II) ions are linked by one μ2-L2- anion and two(μ2-H2O) water molecules to generate an infinite 1D zigzag chain structure. Then these chains are further linked into a 2D layer supramolecular architecture through O–H···O hydrogen bonds. Luminescent property and thermal stability of complex 1 were investigated.