Two 1D chain metal-organic framework complexes, {Co[（C10H5N3O5）- （H2O）2？H2O]}n （1） and {Cd[（C10H5N3O5）（H2O）2]}n （2）, based on a T-shaped tripodal ligand 4-（4,5-dicarboxy- 1H-imidazol-2-yl） pyridine 1-ox...Two 1D chain metal-organic framework complexes, {Co[（C10H5N3O5）- （H2O）2？H2O]}n （1） and {Cd[（C10H5N3O5）（H2O）2]}n （2）, based on a T-shaped tripodal ligand 4-（4,5-dicarboxy- 1H-imidazol-2-yl） pyridine 1-oxide （H3DCImPyO） have been reacted under hydrothermal conditions, and were characterized by single-crystal X-ray structure analysis, fluorescent analysis and thermal gravimetric analysis. According to single-crystal X-ray determination, complex 1 crystallizes in the monoclinic system, space group P21/n with a = 9.4930（13）, b = 13.2024（18）, c = 10.5203（14） A^°, β = 98.402（2）°, Z = 4, V = 1304.4（3）A^°3; and complex 2 crystallizes in the monoclinic system, space group C2/c with a = 13.557（3）, b = 13.568（3）, c = 6.7804（13） A^°, β = 105.095（2）°, Z = 4 and V = 1204.2（4） A^°3. Fluorescent analysis of complex 2 showed an intense emission band at 466 nm when the exciting radiation was set at 360 nm. Dielectric constants of complexes 1 and 2 were measured at different frequencies with temperature variation.展开更多
Two novel coordination polymers with molecular structures（2MI）＋[Zn（2MI）Cl3]-（1） and（2MI）＋NO3-（2） based on ligand 2-methylimidazole（2MI） were synthesized under solution method. Compound 1 crystallizes in ...Two novel coordination polymers with molecular structures（2MI）＋[Zn（2MI）Cl3]-（1） and（2MI）＋NO3-（2） based on ligand 2-methylimidazole（2MI） were synthesized under solution method. Compound 1 crystallizes in the monoclinic system, space group Cc with a=7.489（2）, b=13.448（4）, c=13.983（4） , β=98.402（2）°, Z=4 and V=102.246（2） 3. Compound 2 crystallizes in the orthorhombic system, space group pnma with a=14.296（3）, b=6.3180（12）, c=7.3862（13） , β=90°, Z=4 and V=667.1（2） 3. Dielectric measurements show compounds 1 and 2 have reversible dielectric anomalous behaviors with variation frequencies at different temperature.展开更多
基金Supported by the National Natural Science Foundation of China(No.21201087 and 51502117)NSF of JiangSu Province(BK20131244 and BK20130460)+1 种基金the Foundation of Jiangsu Educational Committee(11KJB150004)the Qinglan Project of Jiangsu Province and Jiangsu Overseas Research&Training Program for University Prominent Young&Middle-aged Teacher and Presidents
文摘Two 1D chain metal-organic framework complexes, {Co[（C10H5N3O5）- （H2O）2？H2O]}n （1） and {Cd[（C10H5N3O5）（H2O）2]}n （2）, based on a T-shaped tripodal ligand 4-（4,5-dicarboxy- 1H-imidazol-2-yl） pyridine 1-oxide （H3DCImPyO） have been reacted under hydrothermal conditions, and were characterized by single-crystal X-ray structure analysis, fluorescent analysis and thermal gravimetric analysis. According to single-crystal X-ray determination, complex 1 crystallizes in the monoclinic system, space group P21/n with a = 9.4930（13）, b = 13.2024（18）, c = 10.5203（14） A^°, β = 98.402（2）°, Z = 4, V = 1304.4（3）A^°3; and complex 2 crystallizes in the monoclinic system, space group C2/c with a = 13.557（3）, b = 13.568（3）, c = 6.7804（13） A^°, β = 105.095（2）°, Z = 4 and V = 1204.2（4） A^°3. Fluorescent analysis of complex 2 showed an intense emission band at 466 nm when the exciting radiation was set at 360 nm. Dielectric constants of complexes 1 and 2 were measured at different frequencies with temperature variation.
基金Supported by the National Natural Science Foundation of China(No.21201087 and 21671084)NSF of Jiangsu Province(BK20131244 and BK20130460)+1 种基金the Foundation of Jiangsu Educational Committee(16KJB430011)the Qing Lan Project of Jiangsu Province and Jiangsu Overseas Research&Training Program for University Prominent Young&Middle-aged Teacher and Presidents,Six talent peaks project in Jiangsu Province(2014-XCL-008)
文摘Two novel coordination polymers with molecular structures（2MI）＋[Zn（2MI）Cl3]-（1） and（2MI）＋NO3-（2） based on ligand 2-methylimidazole（2MI） were synthesized under solution method. Compound 1 crystallizes in the monoclinic system, space group Cc with a=7.489（2）, b=13.448（4）, c=13.983（4） , β=98.402（2）°, Z=4 and V=102.246（2） 3. Compound 2 crystallizes in the orthorhombic system, space group pnma with a=14.296（3）, b=6.3180（12）, c=7.3862（13） , β=90°, Z=4 and V=667.1（2） 3. Dielectric measurements show compounds 1 and 2 have reversible dielectric anomalous behaviors with variation frequencies at different temperature.
