A coordination polymer [Ni（pbc）2（H2O）]n（Hpbc = 3-pyrid-4-ylbenzoic acid） has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction,IR and elemental analysis.The crystal is...A coordination polymer [Ni（pbc）2（H2O）]n（Hpbc = 3-pyrid-4-ylbenzoic acid） has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction,IR and elemental analysis.The crystal is of monoclinic,space group C2/c with a=19.624（5）,b=12.029（5）,c=19.452（5）A,β=104.45（5）°,C24H18NiN2O5,Mr=473.11,V=4447（2）A^3,Dc=1.413 g/cm^3,F（000）=1952,μ = 0.91 cm^-1,Z = 8,the final R=0.0424 and wR=0.0871 for 3757 reflections with I〉2σ（I）.X-ray diffraction analysis reveals that the pbc-ligands act as diconnectors to link two Ni（Ⅱ） centers and adopt two coordination modes of μ2-N,O and μ2-N,O,O to form infinite wavy nickel-carboxylate chains along the bc plane.The topological analysis of compound [Ni（pbc）2（H2O）]n reveals that it is a typical CdS framework.展开更多
5-（Hydroxymethyl） isophthalic acid （H2HIA） as a novel organic ligand was prepared from 3,5-bis（methoxycarbonyl）benzoic acid by a two-step method. And then, a 3D helical coor- dination polymer with a 3-fold inter...5-（Hydroxymethyl） isophthalic acid （H2HIA） as a novel organic ligand was prepared from 3,5-bis（methoxycarbonyl）benzoic acid by a two-step method. And then, a 3D helical coor- dination polymer with a 3-fold interpenetration structure, namely [Zn1/2（HIA）1/2（DPEE）1/2]n （1）, was hydrothermally synthesized at 160 ℃, using H2HIA ligands to assemble with DPEE ligands and Zn2＋ ions. Complex 1 crystalizes in orthorhombic system, space group Pnna, with a = 8.2118（5）, b = 17.1698（7）, c =14.9922（7） ？, V = 2113.82（18） ？3, μ = 1.194 mm-1, Z = 4 and S = 0.967. Moreover, some physical characteristics of complex 1, such as powder X-ray diffraction （PXRD）, thermogravimetry analyses （TGA） and photoluminescent properties, were also investigated.展开更多
0 Introduction The design and synthesis of coordination polymershas been a subject of intense research due to their novel structures such as diamond,square network,brick wall network,octahedral network and so
基金supported by the Natural Science Foundation of Shandong Province (No Y2007F68)
文摘A coordination polymer [Ni（pbc）2（H2O）]n（Hpbc = 3-pyrid-4-ylbenzoic acid） has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction,IR and elemental analysis.The crystal is of monoclinic,space group C2/c with a=19.624（5）,b=12.029（5）,c=19.452（5）A,β=104.45（5）°,C24H18NiN2O5,Mr=473.11,V=4447（2）A^3,Dc=1.413 g/cm^3,F（000）=1952,μ = 0.91 cm^-1,Z = 8,the final R=0.0424 and wR=0.0871 for 3757 reflections with I〉2σ（I）.X-ray diffraction analysis reveals that the pbc-ligands act as diconnectors to link two Ni（Ⅱ） centers and adopt two coordination modes of μ2-N,O and μ2-N,O,O to form infinite wavy nickel-carboxylate chains along the bc plane.The topological analysis of compound [Ni（pbc）2（H2O）]n reveals that it is a typical CdS framework.
基金supported by the Natural Science Foundation of Guizhou Province(20122344)125 program of Guizhou Education Department(2012015)the Doctoral Scientific Fund of Zunyi Normal College(2012BSJJ12)
文摘5-（Hydroxymethyl） isophthalic acid （H2HIA） as a novel organic ligand was prepared from 3,5-bis（methoxycarbonyl）benzoic acid by a two-step method. And then, a 3D helical coor- dination polymer with a 3-fold interpenetration structure, namely [Zn1/2（HIA）1/2（DPEE）1/2]n （1）, was hydrothermally synthesized at 160 ℃, using H2HIA ligands to assemble with DPEE ligands and Zn2＋ ions. Complex 1 crystalizes in orthorhombic system, space group Pnna, with a = 8.2118（5）, b = 17.1698（7）, c =14.9922（7） ？, V = 2113.82（18） ？3, μ = 1.194 mm-1, Z = 4 and S = 0.967. Moreover, some physical characteristics of complex 1, such as powder X-ray diffraction （PXRD）, thermogravimetry analyses （TGA） and photoluminescent properties, were also investigated.
文摘0 Introduction The design and synthesis of coordination polymershas been a subject of intense research due to their novel structures such as diamond,square network,brick wall network,octahedral network and so
