A carbon paste electrode modified with electropolymerized fills of isonicotinic acid was developed. The modified electrode shows excellent electrocatalytic activity toward the oxidation of both dopamine （DA） and epi...A carbon paste electrode modified with electropolymerized fills of isonicotinic acid was developed. The modified electrode shows excellent electrocatalytic activity toward the oxidation of both dopamine （DA） and epinephrine （EP）. Separation of the reduction peak potentials for dopamine and epinephrine was about 357 mV in pH 5.3 phosphate buffer solution （PBS） and the character was used for the detection DA and EP simultaneously. The peak currents increase linearly with DA and EP concentration over the range of 8.0×10^-5 to 7.0×10^-4 mol/L and 5.0×10^-6 to 1.0×10^-4 mol/L with detection limits of 2×10^-5 and 1×10^-6 mol/L, respectively. The interference studies showed that the modified electrode exhibits excellent selectivity in the presence of large excess of ascorbic acid （AA）.展开更多
The monoaminotrinitro iron phthalocyanine(FeMATNPc)is used to connect with isonicotinic acid(INA)for amide bonding and axial coordination to synthetic a unique catalyst FeMATNPc-INA,which is loaded in polyacrylonitril...The monoaminotrinitro iron phthalocyanine(FeMATNPc)is used to connect with isonicotinic acid(INA)for amide bonding and axial coordination to synthetic a unique catalyst FeMATNPc-INA,which is loaded in polyacrylonitrile(PAN)nanofibers by electrospinning.The introduction of INA destroys theπ-πconjugated stack structure in phthalocyanine molecules and exposes more active sites.The FeMATNPc-INA structure is characterized by X-ray photoelectron spectroscopy and UV-visible absorption spectrum,and the FeMATNPcINA/PAN structure is characterized by Fourier transform infrared spectroscopy and X-ray diffraction.The FeMATNPc-INA/PAN can effectively activate peroxymonosulfate(PMS)to eliminate carbamazepine(CBZ)within 40 minutes(PMS 1.5 mmol/L)in the dark.The effects of catalyst dosage,PMS concentration,pH and inorganic anion on the degradation of CBZ are investigated.It has been confirmed by electron paramagnetic resonance,gas chromatography–mass spectroscopy and free radical capture experiments that the catalytic system is degraded by·OH,SO4^(·-)and Fe(IV)=O are the major active species,the singlet oxygen(^(1)O_(2))is the secondary active species.The degradation process of CBZ is analyzed by ultra-high performance liquid chromatography-mass spectrometry and the aromatic compounds have been degraded to small molecular acids.展开更多
Terbium perchlorate reacted with isonicotinic acid （Hpya） and biphenyl-2,2＇-dicarboxylic acid （H2dpa） under hydrothermal condition, a new ternary terbium complex [ Tb （pya） （dpa） （H2O） n （ 1 ） was synthes...Terbium perchlorate reacted with isonicotinic acid （Hpya） and biphenyl-2,2＇-dicarboxylic acid （H2dpa） under hydrothermal condition, a new ternary terbium complex [ Tb （pya） （dpa） （H2O） n （ 1 ） was synthesized. The structure of the ternary complex was determined by X-ray single crystal diffraction and characterized by elemental analysis, fluorescence measurement. The fluorescence spectrum shows the title complex emits strong green light. The crystal data for the com- plex： monoclinic, P21/n space group, a =0.8908（5）nm, b = 1.0569（6）nm, c =2.0969（11）nm, β = 98.446（8）°, V = 1.9528（18） nm^3, Z = 4, R = 0.0241, wR2 = 0.0534. The center Tb3＋ ion is eight coordinated. The coordination polyhedron around Tb3 ＋ ion can be described as a distorted square antiprism. The complex forms an infinite one-dimenand sional alternating chain polymer by bridging carboxyl groups of pyadpa.展开更多
Benzil,1,2-diphenylethane-1,2-dione, was used as an excellent electrocatalyst for reduction of carbon dioxide, CO. The reduction overpotential of COwas reduced about 900 m V in the presence of a benzil mediator. The c...Benzil,1,2-diphenylethane-1,2-dione, was used as an excellent electrocatalyst for reduction of carbon dioxide, CO. The reduction overpotential of COwas reduced about 900 m V in the presence of a benzil mediator. The chemical reaction of the product of the electrocatalytic reduction of CO,(activated CO,CO) with pyridine at a glassy carbon electrode, GCE, surface and in an acetonitrile-ButNClOsolution was investigated by cyclic voltammetry, chronoamperometry and controlled potential coulometry.By chronoamperometry, the catalytic rate constant, k, for the electron transfer between benzil and COwas obtained as 8.1 ± 0.4 Ms. The results indicate that pyridine has a strong interaction with the activated CO. The coulometry method was used to obtain the product of the pyridine chemical reaction with CO. The spectral characterizations of FTIR,H andC NMR of the coulometry experiment product proved that the pyridine anion radical, Py, was carboxylated by CO, and isonicotinic acid is the final major product.展开更多
Viologens (<i>N,N'</i>-dimethyl-4,4-bipyridinium) are advanced functional materials, found important applications in electrochromic devices, molecular machines, organic batteries, and carbohydrate oxid...Viologens (<i>N,N'</i>-dimethyl-4,4-bipyridinium) are advanced functional materials, found important applications in electrochromic devices, molecular machines, organic batteries, and carbohydrate oxidation catalysts in alkaline fuel. In this article, we investigated the design, synthesis and photophysical properties of <i>N,N'</i>-dimethyl-2,5-Bis(pyridinium)oxadiazole <b>4</b> and its precursor 2,5- Bis(pyridine)oxadiazole<b> 2</b>. The crystal structure and photophysical properties of viologen <b>4</b> and precursor <b>2</b> have been determined. The viologen molecule <b>4</b> crystallized in monoclinic form, space group <i>P</i>2<sub>1</sub>/<i>n</i> with four molecules in unit cell. Precursor molecule <b>2</b> also crystalized in monoclinic form, space group <i>C</i>2/<i>c</i> with four molecules in unit cell. From X-rd data, we found three cations in the molecular structure of viologen molecule <b>4</b>, which is unusual in viologens. In the three-dimensional molecular packing diagram of molecule <b>4</b>, the three cations and iodate anions are stabilized by C···C, C···I, N···I, N···H, H···I, N—H···I and C—H···I. The dihedral angle between planes having oxadiazole and two benzene rings are 5°and 8°, suggesting the molecule <b>4</b> is a slightly strained one. The molecular structure of precursor molecule <b>2</b> stabilized by C···C and N···H short contacts between the molecules. The molecule <b>4</b> displayed strong absorbance at 315 nm and emissions between 390 - 410 nm.展开更多
A heterometallic 4f-5d inorganic-organic metaMsonicotinato hybrid [Gd（C6NO2H5）3- （H2O）2]2n·（nH5O2）（nHgCl5）（2nHgCl4）·（2nH2O） 1 has been synthesized via hydrothermal reaction and structurally char...A heterometallic 4f-5d inorganic-organic metaMsonicotinato hybrid [Gd（C6NO2H5）3- （H2O）2]2n·（nH5O2）（nHgCl5）（2nHgCl4）·（2nH2O） 1 has been synthesized via hydrothermal reaction and structurally characterized. Complex 1 crystallizes in the space group C2/c of monoclinic system with four formula units in a cell： a = 24.234（8）, b = 20.816（7）, c = 15.333（3）A , β= 128.091（8）°, V = 6088（3）A^3, C36H47Cl13Gd2Hg3N6O20, Mr = 2260.92, Dc = 2.467 g/cm^3, S = 0.896, μ（MoKα） = 10.331 mm^-1, F（000） = 4216, R = 0.0344 and wR = 0.0629. The crystal structure analysis reveals that the title complex is characteristic of a one-dimensional chain-like structure. Photoluminescent investigation reveals that the title complex displays a broad and intense emission in the green region.展开更多
A new heterometallic 4f-5d inorganic-organic metal-isonicotinic acid complex [La（C6NO2Hs）3-（H2O）2]2n·（nH5O2）（nHgCl5）（2nHgCl4）·（2nH2O） 1 has been synthesized via hydro- thermal reaction and stru...A new heterometallic 4f-5d inorganic-organic metal-isonicotinic acid complex [La（C6NO2Hs）3-（H2O）2]2n·（nH5O2）（nHgCl5）（2nHgCl4）·（2nH2O） 1 has been synthesized via hydro- thermal reaction and structurally characterized. Complex 1 crystallizes in the space group C21c of monoclinic system with four formula units in a cell： a = 24.140（7）, b = 20.884（7）, c = 15.462（2）A, fl = 127.46（1）°, V = 6187（3）A3, C36HaTCl13Hg3La2N6020, Mr = 2224.24, Dc = 2.388 g/cm3, Z = 4, T = 293（2） K, μ（MoKa） = 9.401 mm-1, F（000） = 4160 and RIwR = 0.0376/0.0636 for 4130 observed reflections （I 〉 20（/）） and 5617 unique reflections. Complex 1 is characteristic of a one-dimensional polycationic chain-like structure. Photoluminescent investigation reveals that the title complex displays interesting emissions in violet and orange regions. The luminescence spectra show stronger orange emission than violet emission. Optical absorption spectra of 1 reveal the presence of a wide optical bandgap of 3.41 eV.展开更多
Zinc complexes of Schiff base ligands exhibit interesting properties which could be exploited for potential applications as catalysts and models for biochemical syste<span style="font-family:Verdana;">...Zinc complexes of Schiff base ligands exhibit interesting properties which could be exploited for potential applications as catalysts and models for biochemical syste<span style="font-family:Verdana;">ms. In this study, we report of the synthesis of a new zinc Schiff base complex, bis</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">(N’-(pyridine-3-carboxaldehyde) isonicotinoylhydrazone) zinc(II), which </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">has been characterized by physico-chemical methods. The X-ray single crystal structure of the complex has also been determined. The Schiff base ligand is bonded</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> to the metal in a monodentate manner, coordinating through the pyridine N-atom, as shown from spectral studies. The crystal structure shows the zinc atom bonded to two Schiff base</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s</span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> and four aqua ligands, with each Schiff base ligand coordinating through its pyridine N-atom forming a distorted octahedral ZnN</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;">O</span><sub><span style="font-family:Verdana;">4</span></sub><span style="font-family:Verdana;"> complex. Two water molecules and two nitrate ions found in the crystal structure link the different monomers through hydrogen bonding to form a layered supramolecular structure.</span></span></span></span>展开更多
The title complex [(Ag3L2)(ClO4)]n 1, where HL = isonicotinic acid, has been prepared from the reaction of isonicotinic acid with AgClO4?H2O at room temperature and its struc- ture was determined by single-crystal X...The title complex [(Ag3L2)(ClO4)]n 1, where HL = isonicotinic acid, has been prepared from the reaction of isonicotinic acid with AgClO4?H2O at room temperature and its struc- ture was determined by single-crystal X-ray diffraction. The crystal of 1 is of triclinic, space group P1 with a = 8.429(3), b = 10.694(4), c = 10.840(4) ?, α = 119.063(4), β = 100.474(5), γ = 99.901(5)°, V = 800.4(5) ?3, Mr = 1334.53, Dc = 2.769 g/cm3, Z = 2, μ(MoKα) = 3.848 mm-1, F(000) = 632, R = 0.0250 and wR = 0.0582 for 2872 observed reflections with I > 2σ(I). Complex 1 is a two-dimensional network consisting of adjacent one-dimensional chains through Ag–Ag inter- actions.展开更多
Pollution of environment, connected with intensive industry and, as a result, declination of health of nation is one of the biggest problems of modem age. The purpose of research was the studying of influence of hydra...Pollution of environment, connected with intensive industry and, as a result, declination of health of nation is one of the biggest problems of modem age. The purpose of research was the studying of influence of hydrazine derivatives on redistribution of plasma protein between blood and lymph and change of hemodynamic poisoned by 1, l-nitrozodimethylamine. parameter caused by this. There were some changes in organism展开更多
A new Cu(Ⅱ) coordination polymer [Cu(inio)2(H2O)] (inio = isonicotinic acid N-oxide) with chemical formula C12H10CuN2O7 was prepared and its crystal structure has been determined by X-ray analysis. The complex crysta...A new Cu(Ⅱ) coordination polymer [Cu(inio)2(H2O)] (inio = isonicotinic acid N-oxide) with chemical formula C12H10CuN2O7 was prepared and its crystal structure has been determined by X-ray analysis. The complex crystallizes in the monoclinic system, space group C2/c with a = 12.455(3), b = 6.202(1), c = 16.555(3) ? b = 106.776(3), V = 1224.3(4) 3, Z = 4, Mr = 357.76, Dc =1.941 g/cm3, m(MoKa) = 1.827 mm-1, F(000) = 724, R = 0.0601 and wR = 0.1417 for 908 observed reflections (I > 2s(I)). The Cu(Ⅱ) atom is coordinated by an elongated square pyramid geometry. The deprotonated isonicotinic acid N-oxides form a double-bridge between each pair of Cu(Ⅱ) ions in trans form through two oxygen atoms from the carboxyl groups and two other oxygen atoms from the -NO groups, respectively, which leads to an infinite one dimensional chain. The two adjacent elongated Cu(Ⅱ) square pyramidal geometries are arranged in trans form in the same chain. The OH…O hydrogen bonds extend the chain structure into two-dimensional layers.展开更多
基金supported by Key Scientific Research Program in Colleges and Universities of Ministry of Education of China(No.207151)Foundation of Educational Commission of Shnanxi Province of China(No.08JK322)Youth Foundation of Xi'an University of Architecture and Technology(No.QN0620)
文摘A carbon paste electrode modified with electropolymerized fills of isonicotinic acid was developed. The modified electrode shows excellent electrocatalytic activity toward the oxidation of both dopamine （DA） and epinephrine （EP）. Separation of the reduction peak potentials for dopamine and epinephrine was about 357 mV in pH 5.3 phosphate buffer solution （PBS） and the character was used for the detection DA and EP simultaneously. The peak currents increase linearly with DA and EP concentration over the range of 8.0×10^-5 to 7.0×10^-4 mol/L and 5.0×10^-6 to 1.0×10^-4 mol/L with detection limits of 2×10^-5 and 1×10^-6 mol/L, respectively. The interference studies showed that the modified electrode exhibits excellent selectivity in the presence of large excess of ascorbic acid （AA）.
基金supported by National Natural Science Foundation of China (No.22006136)。
文摘The monoaminotrinitro iron phthalocyanine(FeMATNPc)is used to connect with isonicotinic acid(INA)for amide bonding and axial coordination to synthetic a unique catalyst FeMATNPc-INA,which is loaded in polyacrylonitrile(PAN)nanofibers by electrospinning.The introduction of INA destroys theπ-πconjugated stack structure in phthalocyanine molecules and exposes more active sites.The FeMATNPc-INA structure is characterized by X-ray photoelectron spectroscopy and UV-visible absorption spectrum,and the FeMATNPcINA/PAN structure is characterized by Fourier transform infrared spectroscopy and X-ray diffraction.The FeMATNPc-INA/PAN can effectively activate peroxymonosulfate(PMS)to eliminate carbamazepine(CBZ)within 40 minutes(PMS 1.5 mmol/L)in the dark.The effects of catalyst dosage,PMS concentration,pH and inorganic anion on the degradation of CBZ are investigated.It has been confirmed by electron paramagnetic resonance,gas chromatography–mass spectroscopy and free radical capture experiments that the catalytic system is degraded by·OH,SO4^(·-)and Fe(IV)=O are the major active species,the singlet oxygen(^(1)O_(2))is the secondary active species.The degradation process of CBZ is analyzed by ultra-high performance liquid chromatography-mass spectrometry and the aromatic compounds have been degraded to small molecular acids.
文摘Terbium perchlorate reacted with isonicotinic acid （Hpya） and biphenyl-2,2＇-dicarboxylic acid （H2dpa） under hydrothermal condition, a new ternary terbium complex [ Tb （pya） （dpa） （H2O） n （ 1 ） was synthesized. The structure of the ternary complex was determined by X-ray single crystal diffraction and characterized by elemental analysis, fluorescence measurement. The fluorescence spectrum shows the title complex emits strong green light. The crystal data for the com- plex： monoclinic, P21/n space group, a =0.8908（5）nm, b = 1.0569（6）nm, c =2.0969（11）nm, β = 98.446（8）°, V = 1.9528（18） nm^3, Z = 4, R = 0.0241, wR2 = 0.0534. The center Tb3＋ ion is eight coordinated. The coordination polyhedron around Tb3 ＋ ion can be described as a distorted square antiprism. The complex forms an infinite one-dimenand sional alternating chain polymer by bridging carboxyl groups of pyadpa.
文摘Benzil,1,2-diphenylethane-1,2-dione, was used as an excellent electrocatalyst for reduction of carbon dioxide, CO. The reduction overpotential of COwas reduced about 900 m V in the presence of a benzil mediator. The chemical reaction of the product of the electrocatalytic reduction of CO,(activated CO,CO) with pyridine at a glassy carbon electrode, GCE, surface and in an acetonitrile-ButNClOsolution was investigated by cyclic voltammetry, chronoamperometry and controlled potential coulometry.By chronoamperometry, the catalytic rate constant, k, for the electron transfer between benzil and COwas obtained as 8.1 ± 0.4 Ms. The results indicate that pyridine has a strong interaction with the activated CO. The coulometry method was used to obtain the product of the pyridine chemical reaction with CO. The spectral characterizations of FTIR,H andC NMR of the coulometry experiment product proved that the pyridine anion radical, Py, was carboxylated by CO, and isonicotinic acid is the final major product.
文摘Viologens (<i>N,N'</i>-dimethyl-4,4-bipyridinium) are advanced functional materials, found important applications in electrochromic devices, molecular machines, organic batteries, and carbohydrate oxidation catalysts in alkaline fuel. In this article, we investigated the design, synthesis and photophysical properties of <i>N,N'</i>-dimethyl-2,5-Bis(pyridinium)oxadiazole <b>4</b> and its precursor 2,5- Bis(pyridine)oxadiazole<b> 2</b>. The crystal structure and photophysical properties of viologen <b>4</b> and precursor <b>2</b> have been determined. The viologen molecule <b>4</b> crystallized in monoclinic form, space group <i>P</i>2<sub>1</sub>/<i>n</i> with four molecules in unit cell. Precursor molecule <b>2</b> also crystalized in monoclinic form, space group <i>C</i>2/<i>c</i> with four molecules in unit cell. From X-rd data, we found three cations in the molecular structure of viologen molecule <b>4</b>, which is unusual in viologens. In the three-dimensional molecular packing diagram of molecule <b>4</b>, the three cations and iodate anions are stabilized by C···C, C···I, N···I, N···H, H···I, N—H···I and C—H···I. The dihedral angle between planes having oxadiazole and two benzene rings are 5°and 8°, suggesting the molecule <b>4</b> is a slightly strained one. The molecular structure of precursor molecule <b>2</b> stabilized by C···C and N···H short contacts between the molecules. The molecule <b>4</b> displayed strong absorbance at 315 nm and emissions between 390 - 410 nm.
基金the doctor scientific research start-up foundation of Jinggangshan University,China
文摘A heterometallic 4f-5d inorganic-organic metaMsonicotinato hybrid [Gd（C6NO2H5）3- （H2O）2]2n·（nH5O2）（nHgCl5）（2nHgCl4）·（2nH2O） 1 has been synthesized via hydrothermal reaction and structurally characterized. Complex 1 crystallizes in the space group C2/c of monoclinic system with four formula units in a cell： a = 24.234（8）, b = 20.816（7）, c = 15.333（3）A , β= 128.091（8）°, V = 6088（3）A^3, C36H47Cl13Gd2Hg3N6O20, Mr = 2260.92, Dc = 2.467 g/cm^3, S = 0.896, μ（MoKα） = 10.331 mm^-1, F（000） = 4216, R = 0.0344 and wR = 0.0629. The crystal structure analysis reveals that the title complex is characteristic of a one-dimensional chain-like structure. Photoluminescent investigation reveals that the title complex displays a broad and intense emission in the green region.
基金supported by the Doctor Scientific Research Start-up Foundation of Jinggangshan University
文摘A new heterometallic 4f-5d inorganic-organic metal-isonicotinic acid complex [La（C6NO2Hs）3-（H2O）2]2n·（nH5O2）（nHgCl5）（2nHgCl4）·（2nH2O） 1 has been synthesized via hydro- thermal reaction and structurally characterized. Complex 1 crystallizes in the space group C21c of monoclinic system with four formula units in a cell： a = 24.140（7）, b = 20.884（7）, c = 15.462（2）A, fl = 127.46（1）°, V = 6187（3）A3, C36HaTCl13Hg3La2N6020, Mr = 2224.24, Dc = 2.388 g/cm3, Z = 4, T = 293（2） K, μ（MoKa） = 9.401 mm-1, F（000） = 4160 and RIwR = 0.0376/0.0636 for 4130 observed reflections （I 〉 20（/）） and 5617 unique reflections. Complex 1 is characteristic of a one-dimensional polycationic chain-like structure. Photoluminescent investigation reveals that the title complex displays interesting emissions in violet and orange regions. The luminescence spectra show stronger orange emission than violet emission. Optical absorption spectra of 1 reveal the presence of a wide optical bandgap of 3.41 eV.
文摘Zinc complexes of Schiff base ligands exhibit interesting properties which could be exploited for potential applications as catalysts and models for biochemical syste<span style="font-family:Verdana;">ms. In this study, we report of the synthesis of a new zinc Schiff base complex, bis</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">(N’-(pyridine-3-carboxaldehyde) isonicotinoylhydrazone) zinc(II), which </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">has been characterized by physico-chemical methods. The X-ray single crystal structure of the complex has also been determined. The Schiff base ligand is bonded</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> to the metal in a monodentate manner, coordinating through the pyridine N-atom, as shown from spectral studies. The crystal structure shows the zinc atom bonded to two Schiff base</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s</span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> and four aqua ligands, with each Schiff base ligand coordinating through its pyridine N-atom forming a distorted octahedral ZnN</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;">O</span><sub><span style="font-family:Verdana;">4</span></sub><span style="font-family:Verdana;"> complex. Two water molecules and two nitrate ions found in the crystal structure link the different monomers through hydrogen bonding to form a layered supramolecular structure.</span></span></span></span>
基金This work was supported by the Educational Science and Technology Foundation of Henan Province (No. 97150016)
文摘The title complex [(Ag3L2)(ClO4)]n 1, where HL = isonicotinic acid, has been prepared from the reaction of isonicotinic acid with AgClO4?H2O at room temperature and its struc- ture was determined by single-crystal X-ray diffraction. The crystal of 1 is of triclinic, space group P1 with a = 8.429(3), b = 10.694(4), c = 10.840(4) ?, α = 119.063(4), β = 100.474(5), γ = 99.901(5)°, V = 800.4(5) ?3, Mr = 1334.53, Dc = 2.769 g/cm3, Z = 2, μ(MoKα) = 3.848 mm-1, F(000) = 632, R = 0.0250 and wR = 0.0582 for 2872 observed reflections with I > 2σ(I). Complex 1 is a two-dimensional network consisting of adjacent one-dimensional chains through Ag–Ag inter- actions.
文摘Pollution of environment, connected with intensive industry and, as a result, declination of health of nation is one of the biggest problems of modem age. The purpose of research was the studying of influence of hydrazine derivatives on redistribution of plasma protein between blood and lymph and change of hemodynamic poisoned by 1, l-nitrozodimethylamine. parameter caused by this. There were some changes in organism
基金the Natural Science Foundation of Xuzhou Normal University (01BXL009)
文摘A new Cu(Ⅱ) coordination polymer [Cu(inio)2(H2O)] (inio = isonicotinic acid N-oxide) with chemical formula C12H10CuN2O7 was prepared and its crystal structure has been determined by X-ray analysis. The complex crystallizes in the monoclinic system, space group C2/c with a = 12.455(3), b = 6.202(1), c = 16.555(3) ? b = 106.776(3), V = 1224.3(4) 3, Z = 4, Mr = 357.76, Dc =1.941 g/cm3, m(MoKa) = 1.827 mm-1, F(000) = 724, R = 0.0601 and wR = 0.1417 for 908 observed reflections (I > 2s(I)). The Cu(Ⅱ) atom is coordinated by an elongated square pyramid geometry. The deprotonated isonicotinic acid N-oxides form a double-bridge between each pair of Cu(Ⅱ) ions in trans form through two oxygen atoms from the carboxyl groups and two other oxygen atoms from the -NO groups, respectively, which leads to an infinite one dimensional chain. The two adjacent elongated Cu(Ⅱ) square pyramidal geometries are arranged in trans form in the same chain. The OH…O hydrogen bonds extend the chain structure into two-dimensional layers.
