The reactions of Co（C1O4）2·6H2O and Co（NO3）2.6H2O with the di-Schiff base ligand N,N＇-bis-（1-benzimidazo-2-yl-ethylidene）-ethane-1,2-diamine （LA） in ethanol have been investigated. The reactions of LA wi...The reactions of Co（C1O4）2·6H2O and Co（NO3）2.6H2O with the di-Schiff base ligand N,N＇-bis-（1-benzimidazo-2-yl-ethylidene）-ethane-1,2-diamine （LA） in ethanol have been investigated. The reactions of LA with excess amount of cobalt salts yield the six-coordinate complexes [CoL2]（ClO4）E·H2O 1 and [CoL2]（NO3）E·H2O 2 as isolatable products （L= N-（1- benzimidazo-2-yl-ethylidene）-ethane-1,2-diamine）, where L is a tri-dentate mono-Schiff base ligand, resulting from the hydrolysis of the precursor di-Schiff base LA. Both complexes were characterized by X-ray crystallography. Crystal data for complex 1： monoclinic, space group P21/c, a = 11.9214（10）, b = 23.5828（17）, c = 14.0387（12）A, β = 135.219（4）°, C22H30Cl2CoN8O9, Mr = 680.37, V = 2780.1（4） A^3 ,Z = 4, Dc = 1.625 g/cm^3,μ（MoKa） = 0.876 mm^-1, F（000） = 1404, the final R = 0.0725 and wR = 0.1530 for 5726 observed reflections （I 〉 2σ（I））. Crystal data for complex 2： monoclinic, space group P21/c, a = 18.2162（16）, b = 10.0610（6）, c = 18.593（2）A, β = 130.099（3）°, C22H30CoN10O7, Mr = 605.49, V = 2606.5（4） A3 Z = 4, Dc = 1.543 g/cm^3,μ（MoKa） = 0.722 mm^-1, F（000） = 1260, the final R = 0.0619 and wR = 0.1429 for 5194 observed reflections （I 〉 2σ（I））. X-ray diffraction analysis reveals that each cobalt atom in the two complexes is chelated by six nitrogen atoms from two tridentate iigands L, exhibiting a slightly distorted octahedral coordination sphere. In both complexes, the strong hydrogen-bonding interactions between the lattice waters and N-H groups of the ligands result in 1D chains which are further connected by ClO4^- （or NO3^-） groups to form a 3D framework. In complex 2, the strong π-π interactions increase the stability of the structure.展开更多
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
A system of diffusion equations of laser induced chain reaction of 1,2-dichloroethane to form vinyl chloride is established.By means of finite differential method,a temporal radial concentration distribution for the p...A system of diffusion equations of laser induced chain reaction of 1,2-dichloroethane to form vinyl chloride is established.By means of finite differential method,a temporal radial concentration distribution for the product vinyl chloride and Cl radicals in a single pulse is computed.展开更多
Two mononuclear tin(IV) complexes, [Sn(pda)2(edt)2] (pda = o-phenylenediamine) (C16H24N4S4Sn, Mr = 519.32) 1 and [Sn(eda)(edt)2] (eda = ethylenediamine) (C6H16N2S4Sn, Mr = 363.14) 2 were synthesized and characterized ...Two mononuclear tin(IV) complexes, [Sn(pda)2(edt)2] (pda = o-phenylenediamine) (C16H24N4S4Sn, Mr = 519.32) 1 and [Sn(eda)(edt)2] (eda = ethylenediamine) (C6H16N2S4Sn, Mr = 363.14) 2 were synthesized and characterized by X-ray structure analysis. 1 belongs to trigonal, space group P-3c1 with a = b = 20.0280(6), c = 8.7679(5) ? V = 3045.8(2) ?, Z = 6, Dc = 1.699 g/cm3, m = 1.677 mm-1, F(000) = 1572, the final R = 0.0418 and wR = 0.1019 for 1805 independent reflections. 2 crystallizes in monoclinic, space group P21/c with a = 10.911(3), b = 9.783(2), c = 11.831(3) ? b = 100.28(2), V = 1242.6(6) ?, Z = 4, Dc = 1.941 g/cm3, m = 2.690 mm-1, F(000) = 720, the final R = 0.0280 and wR = 0.0627 for 2166 independent reflections. Both Sn4+ ions in these two complexes are six-coordinated with a slightly distorted octahedral configu- ration.展开更多
1,2-Bis(4-hydroxy-3-methoxyphenyl)ethane,a by-product formed from synthesis reaction of vanillyl nonanoate,is separated by silica-gel column chromatography and characterized by 1HNMR,13CNMR and MS.
基金the National Natural Science Foundation of China (20425313)the Natural Science Foundation of Fujian Province (2005HZ01-1, 2006L2005, 2006F3135, 2006J0183)
文摘The reactions of Co（C1O4）2·6H2O and Co（NO3）2.6H2O with the di-Schiff base ligand N,N＇-bis-（1-benzimidazo-2-yl-ethylidene）-ethane-1,2-diamine （LA） in ethanol have been investigated. The reactions of LA with excess amount of cobalt salts yield the six-coordinate complexes [CoL2]（ClO4）E·H2O 1 and [CoL2]（NO3）E·H2O 2 as isolatable products （L= N-（1- benzimidazo-2-yl-ethylidene）-ethane-1,2-diamine）, where L is a tri-dentate mono-Schiff base ligand, resulting from the hydrolysis of the precursor di-Schiff base LA. Both complexes were characterized by X-ray crystallography. Crystal data for complex 1： monoclinic, space group P21/c, a = 11.9214（10）, b = 23.5828（17）, c = 14.0387（12）A, β = 135.219（4）°, C22H30Cl2CoN8O9, Mr = 680.37, V = 2780.1（4） A^3 ,Z = 4, Dc = 1.625 g/cm^3,μ（MoKa） = 0.876 mm^-1, F（000） = 1404, the final R = 0.0725 and wR = 0.1530 for 5726 observed reflections （I 〉 2σ（I））. Crystal data for complex 2： monoclinic, space group P21/c, a = 18.2162（16）, b = 10.0610（6）, c = 18.593（2）A, β = 130.099（3）°, C22H30CoN10O7, Mr = 605.49, V = 2606.5（4） A3 Z = 4, Dc = 1.543 g/cm^3,μ（MoKa） = 0.722 mm^-1, F（000） = 1260, the final R = 0.0619 and wR = 0.1429 for 5194 observed reflections （I 〉 2σ（I））. X-ray diffraction analysis reveals that each cobalt atom in the two complexes is chelated by six nitrogen atoms from two tridentate iigands L, exhibiting a slightly distorted octahedral coordination sphere. In both complexes, the strong hydrogen-bonding interactions between the lattice waters and N-H groups of the ligands result in 1D chains which are further connected by ClO4^- （or NO3^-） groups to form a 3D framework. In complex 2, the strong π-π interactions increase the stability of the structure.
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.
文摘A system of diffusion equations of laser induced chain reaction of 1,2-dichloroethane to form vinyl chloride is established.By means of finite differential method,a temporal radial concentration distribution for the product vinyl chloride and Cl radicals in a single pulse is computed.
基金This research was financially supported by the grants from the State Key Laboratory of Structural Chemistry the National Science and Technology of China (001CB1089)+1 种基金 the Chinese Academy of Sciences (CAS) the National Science Foundation of China (20
文摘Two mononuclear tin(IV) complexes, [Sn(pda)2(edt)2] (pda = o-phenylenediamine) (C16H24N4S4Sn, Mr = 519.32) 1 and [Sn(eda)(edt)2] (eda = ethylenediamine) (C6H16N2S4Sn, Mr = 363.14) 2 were synthesized and characterized by X-ray structure analysis. 1 belongs to trigonal, space group P-3c1 with a = b = 20.0280(6), c = 8.7679(5) ? V = 3045.8(2) ?, Z = 6, Dc = 1.699 g/cm3, m = 1.677 mm-1, F(000) = 1572, the final R = 0.0418 and wR = 0.1019 for 1805 independent reflections. 2 crystallizes in monoclinic, space group P21/c with a = 10.911(3), b = 9.783(2), c = 11.831(3) ? b = 100.28(2), V = 1242.6(6) ?, Z = 4, Dc = 1.941 g/cm3, m = 2.690 mm-1, F(000) = 720, the final R = 0.0280 and wR = 0.0627 for 2166 independent reflections. Both Sn4+ ions in these two complexes are six-coordinated with a slightly distorted octahedral configu- ration.
文摘1,2-Bis(4-hydroxy-3-methoxyphenyl)ethane,a by-product formed from synthesis reaction of vanillyl nonanoate,is separated by silica-gel column chromatography and characterized by 1HNMR,13CNMR and MS.
