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Three-component reaction of alkyl isocyanides with acetylenic esters and pyridine-2-carboxaldoxime or α-furildioxime:Synthesis and dynamic NMR study of ketenimines and bis(ketenimines) 被引量:1
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作者 Robabeh Baharfar Leyla Jaafari Razieh Azimi 《Chinese Chemical Letters》 SCIE CAS CSCD 2011年第8期943-946,共4页
The addition of pyridine-2-carboxaldoxime or α-furildioxime to dialkyl acety lenedicarboxy lates under neutral conditions in the presence of alkyl isocyanides leads to ketenimines and bis(ketenimines) in good yields.
关键词 Dialkyl acetylenedicarboxylates pyridine-2-carboxaldoxime α-Furildioxime Alkyl isocyanides KETENIMINES Bis(ketenimines)
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Synthesis, Crystal Structure and DNA-Binding Property of a Mn(Ⅱ) Complex Based on 5-(Tri-fluoromethyl)pyridine-2-carboxylic Acid 被引量:4
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作者 WANG Jia-Kai LI Bing +2 位作者 WU Huan-Ping TIAN Xiao-Yan MA Xiao-Xia 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2019年第8期1349-1355,共7页
A new complex Mn(Htpc)2(H2O)2(1, Htpc = 5-(trifluoromethyl)pyridine-2-carboxylic acid) has been synthesized and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. 1 belongs to triclinic ... A new complex Mn(Htpc)2(H2O)2(1, Htpc = 5-(trifluoromethyl)pyridine-2-carboxylic acid) has been synthesized and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. 1 belongs to triclinic system, space group P■ with a = 5.0885(10), b = 6.5574(13), c = 14.016(3) ?, β = 90.67(3)o, V = 436.34(17) ?3, Z = 1, Dc = 1.793 g·cm-3, μ = 0.855 mm-1, Mr = 471.18, F(000) = 235, the final R = 0.0454 and wR = 0.1134 for 1998 observed reflections with I > 2σ(I). The Mn(Ⅱ) ion is coordinated by two N and two O atoms from two Htpc as well as two O atoms from two coordinated water molecules, forming a 0D motif with distorted octahedral coordinate geometry. The adjacent 0D units are linked into 1D chains through hydrogen bond O(1W)–H(1 WB)···O(2), and via the O(1 W)–H(1 WA)···O(1) hydrogen bond the neighboring 1D chains are connected into a 2D supramolecular layer. Moreover, the interactions between the ligand and its complex with CT-DNA were studied by EtBr fluorescence probe, which suggested that these compounds bind to CT-DNA through an intercalation mode. The binding constants were 0.41 and 0.64 for Htpc and complex 1, respectively. It indicates that the interaction between complex 1 and CT-DNA is stronger than Htpc. 展开更多
关键词 5-(trifluoromethyl)pyridine-2-carboxylic acid crystal structure DNA fluorescence SPECTRA
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Synthesis and fluorescence properties of Tb(Ⅲ) complexes with pyridine-2,6-dicarboxylic acid derivatives 被引量:2
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作者 唐瑞仁 郑由浒 顾国梁 《Journal of Central South University of Technology》 2008年第5期599-605,共7页
Two novel ligands named 4-styrylpyridine-2,6-dicarboxylic acid (4-SPDA) and 4-(4-(2-(2, 6-dicarboxypyridin-4-yl)- vinyl)styryl)pyridine-2,6-dicarboxylic acid(DSPDA) and their complexes with Tb(Ⅲ) were synthesized and... Two novel ligands named 4-styrylpyridine-2,6-dicarboxylic acid (4-SPDA) and 4-(4-(2-(2, 6-dicarboxypyridin-4-yl)- vinyl)styryl)pyridine-2,6-dicarboxylic acid(DSPDA) and their complexes with Tb(Ⅲ) were synthesized and characterized by infrared spectrometry, 1H nuclear magnetic resonance, elemental analysis and gas chromatograph-mass spectrometry. The ligand synthetic route was optimized. The fluorescence properties of the complex in solid state, in different kind of solvents and in solutions with different pH values were investigated in detail. The results show that the yields of DSPDA and 4-SPDA reach over 78% by Wittig-Horner reaction and other eight pyridine-2, 6-dicarboxylic acid derivatives with different substituents on pyridine ring, and their complexes with Tb(Ⅲ) are also obtained. The fluorescence intensities of the complexes with electron-donating groups are more intense than those of the complexes with electron-withdrawing groups on pyridine ring; fluorescence intensities of the complexes are the strongest in neutral solution (pH=7), and the less the dipole moment of solvent molecule is, the stronger the fluorescence intensity is. It is found that the two ligands (4-APDA and DSPDA) are the good sensitizers for Tb(Ⅲ) ion. 展开更多
关键词 Tb(Ⅲ) complexes pyridine-2 6-dicarboxylic acid derivatives SYNTHESIS fluorescence property
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Influence of surfactant concentration on counter-ion induced solubility of poly(pyridine-2,5-diyl)
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作者 木合塔尔.依米提 YAMAMOTO Takakazu 帕提古丽.依明 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE EI CAS CSCD 2005年第5期365-368,共4页
Protonating the pyridine rings of poly(pyridine-2,5-diyl) with dodecybenzenesulfonic acid and camphorsulphonic acid produces polymer materials which can be dissolved in chloroform (in contrast to the unprotonated poly... Protonating the pyridine rings of poly(pyridine-2,5-diyl) with dodecybenzenesulfonic acid and camphorsulphonic acid produces polymer materials which can be dissolved in chloroform (in contrast to the unprotonated polymer, which can only be dissolved in strong acids such as formic acid) and allows mixing the protonated polymers with other chloroform soluble conju- gated polymers for use in electronic devices. The protonating behavior of poly(pyridine-2,5-diyl) with two kinds of surfactants is different in some levels. Dodecybenzenesulfonic acid has higher protonating ability than camphorsulphonic acid. 展开更多
关键词 Poly(pyridine-2 5-diyl) Counter-ion solubility SURFACTANTS
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Crystal Structures of Schiff Base from 4-Aminoantipyrine and Pyridine-2-carboxaldehyde and Its Perchlorate
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作者 谭明雄 刘冰 +3 位作者 刘延成 陈振锋 周忠远 梁宏 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第12期1506-1510,共5页
The Schiff base pyridine-2-carboxaldehyde-4-aminoantipyrine (CI7H16N4O 1) and its perchlorate (C17H17N4O·ClO4 2) have been prepared and characterized by elemental analysis, IR spectra and single-crystal X-ray... The Schiff base pyridine-2-carboxaldehyde-4-aminoantipyrine (CI7H16N4O 1) and its perchlorate (C17H17N4O·ClO4 2) have been prepared and characterized by elemental analysis, IR spectra and single-crystal X-ray crystallography analysis. Both 1 and 2 crystallize in the monoclinic system, space group P21/c. For 1, a = 8.6820(12), b = 24.934(3), c = 7.0064(10) A,, β= 97.942(3)°, V = 1502.2(4) A^3, Z = 4, Dc = 1.293 g/cm^3, F(000) = 616,μ = 0.084 mm^-1, the final R = 0.0592 and wR = 0.1244. For 2, a = 5.9302(2), b = 20.347(7), c = 14.663(6) A, β= 90.200(9)°, V= 1769.201) A^3, Z = 4, Dc = 1.475 g/cm^3, F(000) = 816, μ = 0.254 mm^-1, the final R = 0.0533 and wR = 0.0819. As expected, both molecular structures of 1 and 2 adopt a trans configuration about the central C=N double bond. 2 is an ionic compound with the protonation at N(1) of pyridine-2-carboxaldehyde-4- aminoantipyrine. 展开更多
关键词 crystal structure 4-AMINOANTIPYRINE pyridine-2-carboxaldehyde Schiff base
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Synthesis of 3 or 4-Substituted Pyridine-2, 6-Dicarboxylic Acid Derivatives
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作者 尹显洪 杨满芽 +2 位作者 史华红 陈小明 古练权 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 1999年第S1期395-395,共1页
关键词 CDA Synthesis of 3 or 4-Substituted pyridine-2 DPA Dicarboxylic Acid Derivatives
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Theoretical Study on the Reaction Mechanism of 2-Methoxybenzaldehyde,4-Bromo-indanone,Malononitrile and Ammonium Acetate One-pot to Form 6-(2-Methoxyphenyl)-2-amino-6-bromo-5H-indeno[1,2-b]pyridine-3-carbonitrile
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作者 张福兰 黄辉胜 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2017年第10期1685-1696,共12页
The reaction mechanism of 2-methoxybenzaldehyde, 4-bromo-indanone, malononitrile and ammonium acetate one-pot to form 6-(2-methoxyphenyl)-2-amino-6-bromo-5 Hindeno[1,2-b]pyridine-3-carbonitrile was studied by densit... The reaction mechanism of 2-methoxybenzaldehyde, 4-bromo-indanone, malononitrile and ammonium acetate one-pot to form 6-(2-methoxyphenyl)-2-amino-6-bromo-5 Hindeno[1,2-b]pyridine-3-carbonitrile was studied by density functional theory. The geometries of the reactants, transition states, intermediates and products were optimized at the PW91/DNP level. Vibration analysis was carried out to confirm the transition state structure. Reaction pathways were investigated in this study. The result indicates that the reaction Re→ TSB1→IMB1→ TSB2→ IMB2→TSB3→IMB3→TSB4→IMB4→TSB5→IMB5→TSB6→IMB6→TSB7→IMB7→ TSB8→IMB8→TSB9→IMB9→P2 is the main pathway, the activation energy of which is the lowest. The dominant product predicted theoretically is in agreement with the experiment results. 展开更多
关键词 2-methoxybenzaldehyde 4-bromo-indanone 6-(2-methoxyphenyl)-2-amino-6-bromo-5H-indeno[1 2-b]pyridine-3-carbonitrile density functional reaction mechanism
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Green Chemistry Approach to Fast and Highly Efficient One-Pot Synthesis of Bis-Isoxazolyl-1,2,5,6-Tetrahydro Pyridine-3-Carboxylates
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作者 Eligeti Rajanarendar Kammari Thirupathaiah +1 位作者 Saini Rama Krishna Baireddy Kishore 《Green and Sustainable Chemistry》 2013年第2期9-18,共10页
The synthesis of the bis-isoxazolyl-1,2,5,6-tetrahydro pyridine-3-carboxylates is achieved in high yield without the production of toxic waste products by using room temperature ionic liquid (RTILs) triethyl ammonium ... The synthesis of the bis-isoxazolyl-1,2,5,6-tetrahydro pyridine-3-carboxylates is achieved in high yield without the production of toxic waste products by using room temperature ionic liquid (RTILs) triethyl ammonium acetate (TEAA). The RTIL TEAA played the dual role of efficient green solvent as well as recyclable catalyst. 展开更多
关键词 Bis-Isoxazolyl-1 2 5 6-Tetrahydro pyridine-3-Carboxylates Green Synthesis
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THE FIRST BINUCLEAR MOLYBDENUM AND TUNGSTEN COMPLEXES WITH DOUBLY-BRIDGING PYRIDINE-2-THIOLATO LIGANDS.X-RAY CRYSTAL STRUCTURE OF THE COMPLEX[Mo_2(CO)_4(μ-pyS)_2(PPh_3)_2].2C_7H_8
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作者 You Mao SHI Shi Wei LU +1 位作者 He Fu GUO Ning Hai HU a.Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023 b.Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022 《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第9期741-742,共2页
The title complex was obtained by reactions of [Mo(CO)_3(MeCN)_3] with [CuBr(pySH)(PPh_3)_2]or directly with pySH and PPh_3. The latter method can be used to synthesize the corresponding tungsten complex [W_2(CO)_4(μ... The title complex was obtained by reactions of [Mo(CO)_3(MeCN)_3] with [CuBr(pySH)(PPh_3)_2]or directly with pySH and PPh_3. The latter method can be used to synthesize the corresponding tungsten complex [W_2(CO)_4(μ-pyS)_2(PPh_3)_2].The molecular structure of the title compound was determined by X-ray diffraction method. 展开更多
关键词 Mo pyS PPh3 THE FIRST BINUCLEAR MOLYBDENUM AND TUNGSTEN COMPLEXES WITH DOUBLY-BRIDGING pyridine-2-THIOLATO LIGANDS.X-RAY CRYSTAL STRUCTURE OF THE COMPLEX[Mo2 CO
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Synthesis of Some New Pyridine-2-yl-Benzylidene-Imines
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作者 Abdulhamid Alsaygh Jehan Al-Humaidi Ibrahim Al-Najjar 《International Journal of Organic Chemistry》 2014年第2期116-121,共6页
A series of new Schiff bases derived from 2-aminopyridenes and various aromatic aldehydes have been synthesized and thoroughly investigated by 1H and 13C NMR spectroscopy. The imines were found to exist as only a sing... A series of new Schiff bases derived from 2-aminopyridenes and various aromatic aldehydes have been synthesized and thoroughly investigated by 1H and 13C NMR spectroscopy. The imines were found to exist as only a single E-isomer at ambient temperature. Interestingly, 1H- and 13C-NMR chemical shifts of the (CH=N) amino group are affected by the type of substituent group (X) on the aryl ring. Furthermore UV and IR Spectra of some of the title compounds are also reported. 展开更多
关键词 Schiff’s Bases 1H 13C-NMR pyridine-2-yl-Benzylidene E-Z-Isomers Azomethane Group
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Synthesis, Structure and Property of a Novel Coordination Polymer [Tb(C_7H_3NO_4)(C_6H_4NO_2)(H_2O)] 被引量:4
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作者 叶燕珠 吴新建 汪阿恋 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第12期1860-1864,共5页
A novel terbium(III) coordination polymer [Tb(C7H3NO4)(C6H4NO2)(H2O)] was successfully synthesized hydrothermally and characterized by single-crystal X-ray diffraction. The complex is of monoclinic, space group P21/c ... A novel terbium(III) coordination polymer [Tb(C7H3NO4)(C6H4NO2)(H2O)] was successfully synthesized hydrothermally and characterized by single-crystal X-ray diffraction. The complex is of monoclinic, space group P21/c with a = 9.2252(11), b = 14.1477(16), c = 10.5134(12) A, β = 95.770(2)°, V = 1365.2(3) A3, Z = 4, Dc = 2.248 g·cm-3, F(000) = 880, the final R = 0.0176 and w R = 0.0411 for 2149 observed reflections with I 】 2σ(I). The complex is extended into a three-dimensional network structure with 24-atom rings which are composed of Tb, C and O atoms. The complex displays green fluorescence emission in the solid state at room temperature, which corresponds to 5D4 → 7F5 transition of the Tb(III) ion. 展开更多
关键词 pyridine-2 5-dicarboxylic acid TERBIUM coordination polymer luminescent property
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Synthesis and Crystal Structure of (Z)-1- (3-Fluorobenzyl)-5-((3-fluorobenzylimino)(2-hydroxy-4-methoxyphenyl)methyl)pyridin-2(1H)-one
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作者 吕志良 王甜甜 +4 位作者 张一凯 冯继禄 孙海玲 刘嘉 李科 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第12期1640-1644,共5页
The title compound (Z)-1-(3-fluorobenzyl)-5-((3-fluorobenzylimino)(2-hydroxy-4- methoxyphenyl)methyl)pyridin-2(1H)-one (C27H22F2N2O3,Mr = 460.47) was synthesized and crystallized. The crystal belongs to ... The title compound (Z)-1-(3-fluorobenzyl)-5-((3-fluorobenzylimino)(2-hydroxy-4- methoxyphenyl)methyl)pyridin-2(1H)-one (C27H22F2N2O3,Mr = 460.47) was synthesized and crystallized. The crystal belongs to the triclinic system,space group P1 with a = 9.951(6),b = 10.059(6),c = 12.927(7)A,α = 109.828(7),β = 102.304(7),γ = 104.898(7)°,Z = 2,V = 1110.2(11)A^3,Dc =1.377 Mg/m^3,μ(MoKα) = 0.102 mm^-1,F(000) = 480,the final R = 0.0449 and Rw = 0.1250 for 4595 observed reflections (I 〉 2σ(I)). X-ray analysis reveals that both m-fluorobenzyl groups are diorientationally disordered because of the rotation of C–C single bond which was represented as F(1),F(2) and F(1'),F(2'). The diorientational disorder was refined and gave the occupancies of 0.665(4) and 0.335(4) for F(1) and F(1'),0.631(3) and 0.369(3) for F(2) and F(2'). Hydrogen bonds existing in the cell link different components to stabilize the crystal structure. The active data proved that the title compound has good anti-HBV activity. 展开更多
关键词 crystal structure pyridine-2(1H)-one synthesis ANTI-HBV REARRANGEMENT
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Polymerization of 1,3-Butadiene Catalyzed by Cobalt(Ⅱ) and Nickel(Ⅱ) Complexes Bearing Pyridine-2-imidate Ligands 被引量:4
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作者 Heng Liu Shi-ze Yang +3 位作者 Feng Wang Chen-xi Bai 胡雁鸣 张学全 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2016年第9期1060-1069,共10页
Cobalt and nickel complexes (la-ld and 2a-2d, respectively) supported by 2-imidate-pyridine ligands were synthesized and used for 1,3-butadiene polymerization. The complexes were characterized by IR and element anal... Cobalt and nickel complexes (la-ld and 2a-2d, respectively) supported by 2-imidate-pyridine ligands were synthesized and used for 1,3-butadiene polymerization. The complexes were characterized by IR and element analysis, and complex la was further characterized by single-crystal X-ray diffraction. The solid state structure of complex la displayed a distorted tetrahedral geometry. Upon activation with ethylaluminum sesquichloride (EASC), all the complexes showed high activities toward 1,3-butadiene polymerization. The cobalt complexes produced polymers with high cis-1,4 contents and high molecular weights, while the nickel complexes displayed low cis-l,4 selectivity and the resulting polymers had low molecular weights. The catalytic activities of the complexes highly depended on the ligand structure. With the increment of polymerization temperature, the cis-1,4 content and the molecular weight of the resulting polymer decreased. 展开更多
关键词 1 3-BUTADIENE Late-transition metal Cis-1 4-polybutadiene pyridine-2-imidate.
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Relationship between Coordination Structure and Biological Activity of Copper(II) Nicotinate 被引量:5
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作者 CHEN Qiang LI Qing-Lu 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第9期1141-1147,共7页
The copper(Ⅱ) complexes of pyridine-3-carboxylic acid (nicotinic acid) and pyridine-2-carboxylic acid (isonicotinic acid) were synthesized, and their structures were characterized by elemental analysis, infrare... The copper(Ⅱ) complexes of pyridine-3-carboxylic acid (nicotinic acid) and pyridine-2-carboxylic acid (isonicotinic acid) were synthesized, and their structures were characterized by elemental analysis, infrared spectrum, powder X-ray diffraction and so on. The results show that under experimental conditions, the ligands of synthesized copper nicotinate and copper isonicotinate are coordinated simultaneity with copper(Ⅱ) via the nitrogen of pyridine group and an oxygen of carboxylic acid group to form bidentate chelates. The crystal of copper nicotinate with two six-membered chelate rings belongs to monoclinic system, while that of copper isonicotinate having two five-membered chelate rings is of triclinic system. The tests show that the biological activities, such as the improvement of feed utilization, growth, anti-oxidation ability of organism and disease-resistant power, are different when copper nicotinate, copper inicotinate, copper-lysine chelate, copper-methionine chelate and copper sulphate are added in pig's feed, respectively. Due to its higher biological activity, less pollution and lower toxicity, copper nicotinate has wide potential applications as a feed additive. 展开更多
关键词 pyridine-3-carboxylic acid (copper nicotinate) copper pyridine-2-carboxylic acid (copper isonicotinate) copper coordination structure toxicity GROWTH-PROMOTING enzyme activity
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A New Thioamide Derivative for Separation and Preconcentration of Multi Elements in Aquatic Environment by Cloud Point Extraction 被引量:1
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作者 Mohamed M. Hassanien Ali M. Hassan +1 位作者 Wael I. Mortada Ahmed A. El-Asmy 《American Journal of Analytical Chemistry》 2011年第6期697-709,共13页
2-(pyridine-2-yl)-N-p-chlorohydrazinecarbothioamide (HCPTS) was synthesized, characterized and successfully applied for the preconcentration of Cu(II), Ni(II), Zn(II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II) in wat... 2-(pyridine-2-yl)-N-p-chlorohydrazinecarbothioamide (HCPTS) was synthesized, characterized and successfully applied for the preconcentration of Cu(II), Ni(II), Zn(II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II) in water, blood, and urine samples prior to graphite furnace atomic absorption determination (GFAAS);Hg was determined by cold vapor technique. Under the optimum experimental conditions (i.e. pH = 8, 10–4 M of HCPTS, 0.05% w/v of Triton X-114), calibration graphs were linear in the range of 0.02 to 200 ng?mL–1 for Co(II), Cd(II), Pb(II) and Ni(II);0.03 to 200 ng?mL–1 for Cu(II);0.07 to 200 ng?mL–1 for Fe(II) and Zn(II) and 0.02 to 150 ng?mL–1 for Hg(II). The enrichment factors were 43, 51, 41, 46, 54, 40, 45 and 52 for Cu(II), Ni(II),Zn (II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II), respectively. The limit of detection were found to be 0.019, 0.094, 0.0514, 0.052, 0.0165, 0.047, 0.068 and 0.041 ng?mL–1 for Cu(II), Ni(II), Zn(II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II), respectively. The developed method was applied to the determination of these metal ions in water, blood and urine samples with satisfactory results. 展开更多
关键词 HEAVY Metals PRECONCENTRATION Cloud Point Extraction 2-(pyridine-2-Yl)-N-P-Chlorohydrazinecarbothioamide
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PdCl_2-catalyzed heterocyclotrimerization in MeOH/scCO_2:A versatile approach to dimethyl pyridine-3,5-dicarboxylate from methyl acrylate and urea
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作者 ZOU Bo,JIANG HuanFeng College of Chemistry,South China University of Technology,Guangzhou 510640,China 《Science China Chemistry》 SCIE EI CAS 2008年第5期447-451,共5页
A novel and green method for the synthesis of dimethyl pyridine-3,5-dicarboxylate has been developed. It is PdCl2-catalyzed heterocyclotrimerization of methyl acrylate with urea in methanol/supercritical carbon dioxid... A novel and green method for the synthesis of dimethyl pyridine-3,5-dicarboxylate has been developed. It is PdCl2-catalyzed heterocyclotrimerization of methyl acrylate with urea in methanol/supercritical carbon dioxide. The target compound was obtained with a 75% isolated yield under the optimized con-ditions. 展开更多
关键词 PDCL2 heterocyclotrimerization DIMETHYL pyridine-3 5-dicarboxylate scCO2
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Synthesis, Crystal Structure and Luminescence of a New Europium(Ⅲ) Coordination Polymer with Imidazole Carboxylic Ligand
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作者 DAI Yu-Mei LIU Meng-Jia XU Jie 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2019年第6期970-976,共7页
A new luminescent compound, {[Eu3(L)4(H2 O)8]·(NO3)·4 H2 O}n(1, H2 L = 2-(pyridine-3-yl)-imidazole-4,5-dicarboxylic acid) has been solvothermally synthesized and structurally characterized by eleme... A new luminescent compound, {[Eu3(L)4(H2 O)8]·(NO3)·4 H2 O}n(1, H2 L = 2-(pyridine-3-yl)-imidazole-4,5-dicarboxylic acid) has been solvothermally synthesized and structurally characterized by elemental analyses, IR and single-crystal X-ray diffraction. 1 crystallizes in monoclinic, space group C2/c with a = 21.0183(19), b = 9.5227(6), c = 28.227(3) ?, β = 106.885(5)o, V = 5406.1(8) ?3, Dc = 2.038 g/cm3, μ = 3.358 mm-1, Mr = 1658.76, F(000) = 3247, Z = 4, the final R = 0.0488, wR = 0.1195 and S = 1.075. The deprotonated L ligand employs a μ4-bridge to coordinate with three Eu(Ⅲ) ion, forming a wave-like(3,4)-connected 2 D structure. The existence of π···π interaction between the pyridine rings of L ligands leads to an infinite 3 D network. Furthermore, the thermal analysis, powder diffraction and solid-state photoluminescent properties of compound 1 have also been investigated. 展开更多
关键词 europium(Ⅲ) coordination polymer 2-(pyridine-3-yl)-1H-imidazole-4 5-dicarboxylate photoluminescence
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