A new Cd（II） coordination polymer, {[Cd（Hnbta）（L）]·H2O}n （L = 1,4-bis（5,6-dime- thylbenzimidazol-l-yl）butane）, H3nbta= 5-nitrobenzene-1,2,3-tricarboxylic acid）, has been hydro -thermally synthesized an...A new Cd（II） coordination polymer, {[Cd（Hnbta）（L）]·H2O}n （L = 1,4-bis（5,6-dime- thylbenzimidazol-l-yl）butane）, H3nbta= 5-nitrobenzene-1,2,3-tricarboxylic acid）, has been hydro -thermally synthesized and characterized by elemental analyses, IR, XRPD, and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group P21/n with a = 17.3056（13）, b = 11.0114（9）, c = 17.7484（14） A,β= 117.3640（10）°, V = 3003.7（4） A3, Z = 4, C31H31CdN5O9, Mr = 730.01, Dc = 1.614 g/cm3, μ= 0.792 mm·-1and F（000） = 1488. The cadmium（II） ions are bridged by Hnbta2- to generate a two-dimensional metal organic framework with fes topology. In addition, the thermal stability and fluorescence properties of the complex were also studied.展开更多
2-（Sulfooxy）propane-1,2,3-tricarboxylic acid（supported on silica gel） has been introduced as novel and green catalyst for the formylation of alcohols and amines with ethyl formate,as mild formylation agent,under n...2-（Sulfooxy）propane-1,2,3-tricarboxylic acid（supported on silica gel） has been introduced as novel and green catalyst for the formylation of alcohols and amines with ethyl formate,as mild formylation agent,under neat conditions at room temperature.展开更多
This article described antimicrobial property and structure analysis of 2-hydroxypropane-1,2,3-tricarboxylic acid isolated from the crude extract of Citrus microcarpa. Presently, there was no report on compound from C...This article described antimicrobial property and structure analysis of 2-hydroxypropane-1,2,3-tricarboxylic acid isolated from the crude extract of Citrus microcarpa. Presently, there was no report on compound from C. microcarpa that possessed antimicrobial property against fish pathogenic bacteria. Therefore, in this study, the bioactive principle in C. microcarpa extract was isolated using thin layer chromatography. It＇s structure was elucidated based on nuclear magnetic resonance （NMR） spectroscopic data, such as proton NMR （1HNMR）, correlation spectroscopy, carbon 13 NMR, and heteronuclear multiple bond correlation data. This study showed that the bioactive compound isolated from C. microcarpa was 2-hydroxypropane-1,2,3-tricarboxylic acid monohydrate. The minimum inhibitory concentration （MIC） values of crude C. microcarpa extract and its bioactive component, 2-hydroxypropane-1,2,3-tricarboxylic acid as well as commercially available synthetic 2-hydroxypropane-1,2,3-tricarboxylic acid, were determined against 18 isolates of Edwardsiella tarda and 7 bacterial reference strains, namely, Escherichia coli （ATCC 25922）, Citrobacter freundii （ATCC 8090）, Aeromonas hydrophila （ATCC 49140）, Pseudomonas aeruginosa （ATCC 35032）, Streptococcus agalatiae （ATCC 13813）, E. tarda （ATCC 15947）, and Yersinia enterocolitica （ATCC 23715）, using two-fold microdilution method. The MIC values for both the natural 2-hydroxypropane-1,2,3-tricarboxylic acid and the synthetic one were ranging from 15.6 to 62.5 mg mL-1, whereas that of the crude extract was ranging from 7.8 to 31.3 mg mL-1. These findings showed that both the crude extract and its bioactive component might have potential as antimicrobial agent for aquaculture use.展开更多
The reaction of benzene-1,2,3-tricarboxylate copper(II) trihydrate (Cu<sub>3</sub>(1,2,3-BTC)<sub>2</sub>·3H<sub>2</sub>O) and ethylenediamine (en) gave after recrystallization...The reaction of benzene-1,2,3-tricarboxylate copper(II) trihydrate (Cu<sub>3</sub>(1,2,3-BTC)<sub>2</sub>·3H<sub>2</sub>O) and ethylenediamine (en) gave after recrystallization from methanol at room temperature violet crystalline solid of the polymeric two dimensional material {[Cu<sub>3</sub>(<em>μ</em><sub>3</sub>-1,2,3-BTC)(<em>μ</em><sub>2</sub>-1,2,3-BTC)(en)<sub>3</sub>(OH<sub>2</sub>)<sub>2</sub>(OH)(<em>μ</em><sub>2</sub>-OH<sub>2</sub>)]<sub>2</sub>·5H<sub>2</sub>O·O}<sub>n</sub> (1) as identified by single crystal X-ray diffraction analysis. The compound was also characterized by elemental analysis, FT-IR spectroscopy, UV-vis spectroscopy, thermogravimetric analysis (TGA) and magnetic susceptibility. The molecular structure indicates crystallization in the triclinic space group P-1 with the unit cell parameters a = 12.1205(3) <span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">Å</span></span></span></span>, b = 12.7026(3) <span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">Å</span></span></span></span>, c = 13.9890(3) <span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">Å</span></span></span></span>, <em>α</em> = 75.034(1)<span style="white-space:nowrap;">°</span>, <em>β</em> = 74.957(1)<span style="white-space:nowrap;">°</span>, <em>γ</em> = 68.415(1)<span style="white-space:nowrap;">°</span>. Structural analysis also revealed that the dimeric compound is connected by Cu-O-Cu bridges and the dimer is further converted into a polymeric chain structure through bridging of one benzene-1,2,3-tricarboxylate ligand. Different coordination modes are observed at the copper atom. The Cu atom at the center is octahedral while the two other ones are pentacoordinated. Thermal analysis of the compound showed decomposition processes, while mag展开更多
基金supported by the Youth Foundation of Hebei Province(E2012401070)
文摘A new Cd（II） coordination polymer, {[Cd（Hnbta）（L）]·H2O}n （L = 1,4-bis（5,6-dime- thylbenzimidazol-l-yl）butane）, H3nbta= 5-nitrobenzene-1,2,3-tricarboxylic acid）, has been hydro -thermally synthesized and characterized by elemental analyses, IR, XRPD, and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group P21/n with a = 17.3056（13）, b = 11.0114（9）, c = 17.7484（14） A,β= 117.3640（10）°, V = 3003.7（4） A3, Z = 4, C31H31CdN5O9, Mr = 730.01, Dc = 1.614 g/cm3, μ= 0.792 mm·-1and F（000） = 1488. The cadmium（II） ions are bridged by Hnbta2- to generate a two-dimensional metal organic framework with fes topology. In addition, the thermal stability and fluorescence properties of the complex were also studied.
基金Financial support for this work by the Ilam University,Ilam,Iran is gratefully acknowledged
文摘2-（Sulfooxy）propane-1,2,3-tricarboxylic acid（supported on silica gel） has been introduced as novel and green catalyst for the formylation of alcohols and amines with ethyl formate,as mild formylation agent,under neat conditions at room temperature.
基金funded by E-Science Project (02-01-12-SF0055) provided by Ministry of Science, Technology and Innovation (MOSTI), Malaysia
文摘This article described antimicrobial property and structure analysis of 2-hydroxypropane-1,2,3-tricarboxylic acid isolated from the crude extract of Citrus microcarpa. Presently, there was no report on compound from C. microcarpa that possessed antimicrobial property against fish pathogenic bacteria. Therefore, in this study, the bioactive principle in C. microcarpa extract was isolated using thin layer chromatography. It＇s structure was elucidated based on nuclear magnetic resonance （NMR） spectroscopic data, such as proton NMR （1HNMR）, correlation spectroscopy, carbon 13 NMR, and heteronuclear multiple bond correlation data. This study showed that the bioactive compound isolated from C. microcarpa was 2-hydroxypropane-1,2,3-tricarboxylic acid monohydrate. The minimum inhibitory concentration （MIC） values of crude C. microcarpa extract and its bioactive component, 2-hydroxypropane-1,2,3-tricarboxylic acid as well as commercially available synthetic 2-hydroxypropane-1,2,3-tricarboxylic acid, were determined against 18 isolates of Edwardsiella tarda and 7 bacterial reference strains, namely, Escherichia coli （ATCC 25922）, Citrobacter freundii （ATCC 8090）, Aeromonas hydrophila （ATCC 49140）, Pseudomonas aeruginosa （ATCC 35032）, Streptococcus agalatiae （ATCC 13813）, E. tarda （ATCC 15947）, and Yersinia enterocolitica （ATCC 23715）, using two-fold microdilution method. The MIC values for both the natural 2-hydroxypropane-1,2,3-tricarboxylic acid and the synthetic one were ranging from 15.6 to 62.5 mg mL-1, whereas that of the crude extract was ranging from 7.8 to 31.3 mg mL-1. These findings showed that both the crude extract and its bioactive component might have potential as antimicrobial agent for aquaculture use.
文摘The reaction of benzene-1,2,3-tricarboxylate copper(II) trihydrate (Cu<sub>3</sub>(1,2,3-BTC)<sub>2</sub>·3H<sub>2</sub>O) and ethylenediamine (en) gave after recrystallization from methanol at room temperature violet crystalline solid of the polymeric two dimensional material {[Cu<sub>3</sub>(<em>μ</em><sub>3</sub>-1,2,3-BTC)(<em>μ</em><sub>2</sub>-1,2,3-BTC)(en)<sub>3</sub>(OH<sub>2</sub>)<sub>2</sub>(OH)(<em>μ</em><sub>2</sub>-OH<sub>2</sub>)]<sub>2</sub>·5H<sub>2</sub>O·O}<sub>n</sub> (1) as identified by single crystal X-ray diffraction analysis. The compound was also characterized by elemental analysis, FT-IR spectroscopy, UV-vis spectroscopy, thermogravimetric analysis (TGA) and magnetic susceptibility. The molecular structure indicates crystallization in the triclinic space group P-1 with the unit cell parameters a = 12.1205(3) <span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">Å</span></span></span></span>, b = 12.7026(3) <span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">Å</span></span></span></span>, c = 13.9890(3) <span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">Å</span></span></span></span>, <em>α</em> = 75.034(1)<span style="white-space:nowrap;">°</span>, <em>β</em> = 74.957(1)<span style="white-space:nowrap;">°</span>, <em>γ</em> = 68.415(1)<span style="white-space:nowrap;">°</span>. Structural analysis also revealed that the dimeric compound is connected by Cu-O-Cu bridges and the dimer is further converted into a polymeric chain structure through bridging of one benzene-1,2,3-tricarboxylate ligand. Different coordination modes are observed at the copper atom. The Cu atom at the center is octahedral while the two other ones are pentacoordinated. Thermal analysis of the compound showed decomposition processes, while mag
