l,2-Bis(2,2'-bipyridinyl)ethylene(1) ligand was synthesized by Wittig-Horner reaction and 1, 2-Bis(2, 2'-bipyridinyl)ethane(2) ligand(which can be obtained via another route ) was prepared by hydrogenation of ...l,2-Bis(2,2'-bipyridinyl)ethylene(1) ligand was synthesized by Wittig-Horner reaction and 1, 2-Bis(2, 2'-bipyridinyl)ethane(2) ligand(which can be obtained via another route ) was prepared by hydrogenation of (1). The formation of complexes of (1) and (2) with copper (I) has been studied. The influence of the different bridge chains (CH =CH, CH2CH2) on complexation is discussed on the basis of 1H NMR spectra. Keywords Dipyridine aldehyde, Dipyridine derivative, Copper complex展开更多
The new cadmium（N） coordination polymer [Cd（bte）2（dca）2]n 1 （bte = 1,2-bis（1,2,4- triazol-1-yl）ethane, dca = dicyanamide） was synthesized and characterized by single-crystal X-ray diffraction. The crystal is...The new cadmium（N） coordination polymer [Cd（bte）2（dca）2]n 1 （bte = 1,2-bis（1,2,4- triazol-1-yl）ethane, dca = dicyanamide） was synthesized and characterized by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/n with a = 8.7148（15）, b = 8.6142（17）, c = 15.204（3） A, fl= 92.100（10）°, V= 1140.6（4） A3, Z= 2, Mr = 572.87, Dc= 1.668 g/cm3, F（000） = 572, /t = 1.004 mm-l, the final R = 0.0654 and wR = 0.1429 for 1737 observed reflections （I 〉 2σ（I））. The cadmium atom is coordinated equatorially by four nitrogen atoms from four bte ligands and axially by two nitrogen atoms from two dca anions to adopt a distorted octahedral geometry. Each bte molecule bridges two cadmium（II） atoms. Two strands of bte molecules are wrapped around each other, and held together by cadmium（H） atoms. 1 Forms a double chain structure containing eighteen-membered Cd2（bte）2 rings.展开更多
Two new cadmium（II） and zinc（II） coordination polymers, {[Cd（btre）0.5- （mip）（H2O）2]·H2O}n （1） and [Zn（btre）（mip）]n （2）, were synthesized at room temperature condition and characterized by IR spe...Two new cadmium（II） and zinc（II） coordination polymers, {[Cd（btre）0.5- （mip）（H2O）2]·H2O}n （1） and [Zn（btre）（mip）]n （2）, were synthesized at room temperature condition and characterized by IR spectra, elemental analyses, single-crystal and powder X-ray diffractions （btre = 1,2-bis（1,2,4-triazol-4-yl）ethane, H2mip = 5-methyl-1,3-benzenedicarboxylic acid）. Complex 1 belongs to the triclinic system, P space group, with a = 8.9830（6）, b = 10.0579（6）, c = 10.2479（9） , α = 98.837（6）, β = 115.975（8）, γ = 106.370（6）°, V = 756.30（11） 3 and Z = 2; complex 2 crystallizes in monoclinic, space group P21/c, with a = 7.0332（3）, b = 14.9947（7）, c = 15.9689（7） ？, β = 97.1170（10）°, V = 1671.12（13） ？3 and Z = 4. Compounds 1 and 2 based on the same N/O-donor ligands show different structures. The one-dimensional chains of 1 are further linked by hydrogen bonding and π-π interactions to yield a three-dimensional supramolecular structure. The two-dimensional （6,3） networks of 2 are further extended into a 3D framework via π-π interactions. Thermal stabilities and luminescence of 1 and 2 were investigated.展开更多
The ligand [1, 2-bis(4-pyridinecarboxamido) ethane] (L) and the coordination polymer {[Cu(L)(2)(H2O)].(NO3)(2).6H(2)O}(n)(1) have been synthesized and characterized by IR and H-1 NMR, spectra. Their molecular structur...The ligand [1, 2-bis(4-pyridinecarboxamido) ethane] (L) and the coordination polymer {[Cu(L)(2)(H2O)].(NO3)(2).6H(2)O}(n)(1) have been synthesized and characterized by IR and H-1 NMR, spectra. Their molecular structures and the packing of 1 have been determined by single-crystal X-ray diffraction analysis. The Cu(II) in 1 is bridged by two ligand forming an infinite one-dimensional chain like structure and L in I adopts a different conformation from its free state. 1 belongs to monoclinic, space group P2(1)/n, a = 1.2896(3) nm, b = 1.2552(8) nm, c = 2.2903(19) nm, beta = 93.04(5)degrees, Z = 4, V = 3.702(4) nm(3). The TG and DTG experiments showed that the uncoordinated H2O can be removed at low temperature by heating, and it does not decompose until 250 degreesC.展开更多
Two new 2 D → 2 D zinc(II) coordination polymers, [Zn(btre)0.5(nbdc)(H2 O)]n(1) and {[Zn(btre)0.5(Me Oip)(H2 O)2]·H2 O}n(2)(btre = 1,2-bis(1,2,4-triazol-4-yl)ethane, nbdc=3-nitro-1, 2-benzenedicarboxylate, Me Oi...Two new 2 D → 2 D zinc(II) coordination polymers, [Zn(btre)0.5(nbdc)(H2 O)]n(1) and {[Zn(btre)0.5(Me Oip)(H2 O)2]·H2 O}n(2)(btre = 1,2-bis(1,2,4-triazol-4-yl)ethane, nbdc=3-nitro-1, 2-benzenedicarboxylate, Me Oip=4-methoxybenzene-1, 3-dicarboxylate) were synthesized at room temperature condition and characterized by IR spectra, elemental analyses, single-crystal and powder X-ray diffractions. Three sets of equivalent 2 D(6, 3) networks parallel polycatenated with each other to give a 2 D → 2 D network in 1 and 2. There are strong π-π interactions and hydrogen bonding interactions between adjacent parallel polycatenated 2 D(6, 3) network in 1. Only hydrogen bonding interactions exist in 2. Thermal stabilities and luminescence of 1 and 2 were investigated.展开更多
A novel efficient catalyst for the hydrogenation of carbon dioxide to formic acid ruthenium bisphosphine on functionalized silica was in situ synthesized, affording turnover frequency （TOF） of 1190 h^-1 at 100% sele...A novel efficient catalyst for the hydrogenation of carbon dioxide to formic acid ruthenium bisphosphine on functionalized silica was in situ synthesized, affording turnover frequency （TOF） of 1190 h^-1 at 100% selectivity under 80℃ with total pressure of 16.0 MPa. The catalyst can be separated from the reaction mixture easily and reused with moderate loss of activity.展开更多
Two new isostructure nickel（Ⅱ） coordination polymers, [Ni2（5-Me-ip）（1,2- Bie）（H2O）2]n （1） and [Ni2（5-Br-ip）（1,2-Bie）（H2O）2]n （2） （5-Me-H2ip = 5-methylisophthalic acid, 5-Br-H2ip = 5-mromoisophthali...Two new isostructure nickel（Ⅱ） coordination polymers, [Ni2（5-Me-ip）（1,2- Bie）（H2O）2]n （1） and [Ni2（5-Br-ip）（1,2-Bie）（H2O）2]n （2） （5-Me-H2ip = 5-methylisophthalic acid, 5-Br-H2ip = 5-mromoisophthalic acid, 1,2-Bie = 1,2-bis（imidazole）ethane）, have been synthesized and structurally characterized by single-crystal X-ray diffraction. The result shows that complexes 1 and 2 crystallize in orthorhombic system, space group Pna21 with a = 16.3602（13）, b = 10.1465（8）, c = 21.8803（17）A^°, V = 3632.1（5） A^°3, Z = 4, Dc = 1.525 g/cm3, F（000） = 1728, R = 0.0292 and wR = 0.0668 for 6646 observed reflections （I 〉 2σ（I）） for complex 1 and a = 16.409（3）, b = 10.1625（17）, c = 21.918（4）A^°, V = 3654.9（11） A^°3, Z = 4, Dc = 1.752 g/cm^3, F（000） = 1936, R = 0.0309 and wR = 0.0600 for 6809 observed reflections （I 〉 2σ（I）） for complex 2. They both feature zigzag 2D layer structures, which are further staked along the a-axis through π…π and hydrogen interactions to form 3D supramolecular structures.展开更多
A new Cu（Ⅱ） metal-organic coordination polymer, {[Cu2（tbip）2（bie）2]·H2O}n （1, H2tbip = 5-tert-butyl isophthalic acid, bie = 1,2-bis（imidazol-1 ＇-yl）ethane）, was assembled under hydrothermal conditions...A new Cu（Ⅱ） metal-organic coordination polymer, {[Cu2（tbip）2（bie）2]·H2O}n （1, H2tbip = 5-tert-butyl isophthalic acid, bie = 1,2-bis（imidazol-1 ＇-yl）ethane）, was assembled under hydrothermal conditions by the reactions of Cu（Ⅱ） acetate with H2tbip and bie. Complex 1 was characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction. Complex 1 crystallizes in triclinic, space group P1, with a = 9.9145（10）, b = 13.2211（13）, c = 15.4363（15） nm, a = 87.0250（10）, β = 88.3220（10）, γ = 83.8240（10）°, V= 2008.4（3） nm3, Z = 2, Dc = 1.505 Mg/m3, F（000） = 944, g = 1.125 mm^-1, S = 1.030, the final R = 0.0336 and wR = 0.0790. The results reveal that complex 1 is a two-dimensional layered structure. In addition, magnetic properties of I were also investigated.展开更多
1,2-Bis（salicylidenamino）ethane loaded onto sodium dodecyl sulfate-coated alumina was used as a new chelating sorbent for the preconcentration of traces of Pb（Ⅱ） and Cu（Ⅱ） prior to atomic absorption spectromet...1,2-Bis（salicylidenamino）ethane loaded onto sodium dodecyl sulfate-coated alumina was used as a new chelating sorbent for the preconcentration of traces of Pb（Ⅱ） and Cu（Ⅱ） prior to atomic absorption spectrometric determination. The influence of pH, flow rates of sample and eluent solutions, and foreign ions on the recovery of Pb（Ⅱ） and Cu（Ⅱ） by this sorbent has been studied. The retained ions were eluted with 4 mol·L nitric acid and determined by electrothermal atomic absorption spectrometry （ETAAS）. The data of limit of detection （3σ） for Pb（Ⅱ） and Cu（Ⅱ） were found to be 8.57 and 2.69 ng·L^-1 respectively, while the enrichment factor for both ions was 100. The proposed method was successfully applied to determination of lead and copper in different water samples.展开更多
文摘l,2-Bis(2,2'-bipyridinyl)ethylene(1) ligand was synthesized by Wittig-Horner reaction and 1, 2-Bis(2, 2'-bipyridinyl)ethane(2) ligand(which can be obtained via another route ) was prepared by hydrogenation of (1). The formation of complexes of (1) and (2) with copper (I) has been studied. The influence of the different bridge chains (CH =CH, CH2CH2) on complexation is discussed on the basis of 1H NMR spectra. Keywords Dipyridine aldehyde, Dipyridine derivative, Copper complex
基金supported by NNSFC (No. 20671066), Jiangsu Province (No. BK2006049) the Key Laboratory of Organic Synthesis of Jiangsu Province (No. JSK0612)
文摘The new cadmium（N） coordination polymer [Cd（bte）2（dca）2]n 1 （bte = 1,2-bis（1,2,4- triazol-1-yl）ethane, dca = dicyanamide） was synthesized and characterized by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/n with a = 8.7148（15）, b = 8.6142（17）, c = 15.204（3） A, fl= 92.100（10）°, V= 1140.6（4） A3, Z= 2, Mr = 572.87, Dc= 1.668 g/cm3, F（000） = 572, /t = 1.004 mm-l, the final R = 0.0654 and wR = 0.1429 for 1737 observed reflections （I 〉 2σ（I））. The cadmium atom is coordinated equatorially by four nitrogen atoms from four bte ligands and axially by two nitrogen atoms from two dca anions to adopt a distorted octahedral geometry. Each bte molecule bridges two cadmium（II） atoms. Two strands of bte molecules are wrapped around each other, and held together by cadmium（H） atoms. 1 Forms a double chain structure containing eighteen-membered Cd2（bte）2 rings.
基金Supported by the Natural Science Foundation of Anhui Province(KJ2016A512)Key projects of Anhui Province University Outstanding Youth Talent Support Program(gxyqZD2016372)
文摘Two new cadmium（II） and zinc（II） coordination polymers, {[Cd（btre）0.5- （mip）（H2O）2]·H2O}n （1） and [Zn（btre）（mip）]n （2）, were synthesized at room temperature condition and characterized by IR spectra, elemental analyses, single-crystal and powder X-ray diffractions （btre = 1,2-bis（1,2,4-triazol-4-yl）ethane, H2mip = 5-methyl-1,3-benzenedicarboxylic acid）. Complex 1 belongs to the triclinic system, P space group, with a = 8.9830（6）, b = 10.0579（6）, c = 10.2479（9） , α = 98.837（6）, β = 115.975（8）, γ = 106.370（6）°, V = 756.30（11） 3 and Z = 2; complex 2 crystallizes in monoclinic, space group P21/c, with a = 7.0332（3）, b = 14.9947（7）, c = 15.9689（7） ？, β = 97.1170（10）°, V = 1671.12（13） ？3 and Z = 4. Compounds 1 and 2 based on the same N/O-donor ligands show different structures. The one-dimensional chains of 1 are further linked by hydrogen bonding and π-π interactions to yield a three-dimensional supramolecular structure. The two-dimensional （6,3） networks of 2 are further extended into a 3D framework via π-π interactions. Thermal stabilities and luminescence of 1 and 2 were investigated.
基金ProjectsupportedbytheNaturalScienceFoundationofEducationBureauofLiaoningProvince China (No .2 0 0 2 10 0 5 )
文摘The ligand [1, 2-bis(4-pyridinecarboxamido) ethane] (L) and the coordination polymer {[Cu(L)(2)(H2O)].(NO3)(2).6H(2)O}(n)(1) have been synthesized and characterized by IR and H-1 NMR, spectra. Their molecular structures and the packing of 1 have been determined by single-crystal X-ray diffraction analysis. The Cu(II) in 1 is bridged by two ligand forming an infinite one-dimensional chain like structure and L in I adopts a different conformation from its free state. 1 belongs to monoclinic, space group P2(1)/n, a = 1.2896(3) nm, b = 1.2552(8) nm, c = 2.2903(19) nm, beta = 93.04(5)degrees, Z = 4, V = 3.702(4) nm(3). The TG and DTG experiments showed that the uncoordinated H2O can be removed at low temperature by heating, and it does not decompose until 250 degreesC.
基金Supported by the National Natural Science Foundation of China(21271035)the Natural Science Foundation of Anhui Province(KJ2016A512)the Key Projects of Anhui Province University Outstanding Youth Talent Support Program(gxyqZD2016372)
文摘Two new 2 D → 2 D zinc(II) coordination polymers, [Zn(btre)0.5(nbdc)(H2 O)]n(1) and {[Zn(btre)0.5(Me Oip)(H2 O)2]·H2 O}n(2)(btre = 1,2-bis(1,2,4-triazol-4-yl)ethane, nbdc=3-nitro-1, 2-benzenedicarboxylate, Me Oip=4-methoxybenzene-1, 3-dicarboxylate) were synthesized at room temperature condition and characterized by IR spectra, elemental analyses, single-crystal and powder X-ray diffractions. Three sets of equivalent 2 D(6, 3) networks parallel polycatenated with each other to give a 2 D → 2 D network in 1 and 2. There are strong π-π interactions and hydrogen bonding interactions between adjacent parallel polycatenated 2 D(6, 3) network in 1. Only hydrogen bonding interactions exist in 2. Thermal stabilities and luminescence of 1 and 2 were investigated.
基金the National Natural Science Foundation of China （No.20173048） the Specialized Research Fund for the Doctoral Program of Higher Education （No. 20030335068）+1 种基金 the Scientific Research Fund of Zhcjiang Provincial Education Department （No. 20040320） Zhcjiang Provincial Natural Science Foundation of China （No. Y405088）.
文摘A novel efficient catalyst for the hydrogenation of carbon dioxide to formic acid ruthenium bisphosphine on functionalized silica was in situ synthesized, affording turnover frequency （TOF） of 1190 h^-1 at 100% selectivity under 80℃ with total pressure of 16.0 MPa. The catalyst can be separated from the reaction mixture easily and reused with moderate loss of activity.
基金supported by the Natural Science Foundation of Henan Province(122300410418,132200410404)
文摘Two new isostructure nickel（Ⅱ） coordination polymers, [Ni2（5-Me-ip）（1,2- Bie）（H2O）2]n （1） and [Ni2（5-Br-ip）（1,2-Bie）（H2O）2]n （2） （5-Me-H2ip = 5-methylisophthalic acid, 5-Br-H2ip = 5-mromoisophthalic acid, 1,2-Bie = 1,2-bis（imidazole）ethane）, have been synthesized and structurally characterized by single-crystal X-ray diffraction. The result shows that complexes 1 and 2 crystallize in orthorhombic system, space group Pna21 with a = 16.3602（13）, b = 10.1465（8）, c = 21.8803（17）A^°, V = 3632.1（5） A^°3, Z = 4, Dc = 1.525 g/cm3, F（000） = 1728, R = 0.0292 and wR = 0.0668 for 6646 observed reflections （I 〉 2σ（I）） for complex 1 and a = 16.409（3）, b = 10.1625（17）, c = 21.918（4）A^°, V = 3654.9（11） A^°3, Z = 4, Dc = 1.752 g/cm^3, F（000） = 1936, R = 0.0309 and wR = 0.0600 for 6809 observed reflections （I 〉 2σ（I）） for complex 2. They both feature zigzag 2D layer structures, which are further staked along the a-axis through π…π and hydrogen interactions to form 3D supramolecular structures.
基金supported financially by Henan Province basic and frontier technology research projects of Henan Provincial Department of Science and Technology(No.142300410083)
文摘A new Cu（Ⅱ） metal-organic coordination polymer, {[Cu2（tbip）2（bie）2]·H2O}n （1, H2tbip = 5-tert-butyl isophthalic acid, bie = 1,2-bis（imidazol-1 ＇-yl）ethane）, was assembled under hydrothermal conditions by the reactions of Cu（Ⅱ） acetate with H2tbip and bie. Complex 1 was characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction. Complex 1 crystallizes in triclinic, space group P1, with a = 9.9145（10）, b = 13.2211（13）, c = 15.4363（15） nm, a = 87.0250（10）, β = 88.3220（10）, γ = 83.8240（10）°, V= 2008.4（3） nm3, Z = 2, Dc = 1.505 Mg/m3, F（000） = 944, g = 1.125 mm^-1, S = 1.030, the final R = 0.0336 and wR = 0.0790. The results reveal that complex 1 is a two-dimensional layered structure. In addition, magnetic properties of I were also investigated.
文摘1,2-Bis（salicylidenamino）ethane loaded onto sodium dodecyl sulfate-coated alumina was used as a new chelating sorbent for the preconcentration of traces of Pb（Ⅱ） and Cu（Ⅱ） prior to atomic absorption spectrometric determination. The influence of pH, flow rates of sample and eluent solutions, and foreign ions on the recovery of Pb（Ⅱ） and Cu（Ⅱ） by this sorbent has been studied. The retained ions were eluted with 4 mol·L nitric acid and determined by electrothermal atomic absorption spectrometry （ETAAS）. The data of limit of detection （3σ） for Pb（Ⅱ） and Cu（Ⅱ） were found to be 8.57 and 2.69 ng·L^-1 respectively, while the enrichment factor for both ions was 100. The proposed method was successfully applied to determination of lead and copper in different water samples.
