2-Phenylfuran-3,4-dicarboxylic acid anhydride reacted with seven aromatic compounds, of which five gave keto acids in yields of 94%-63%. The structure of the keto acid was elucidated by reducing it to hydroxy acid and...2-Phenylfuran-3,4-dicarboxylic acid anhydride reacted with seven aromatic compounds, of which five gave keto acids in yields of 94%-63%. The structure of the keto acid was elucidated by reducing it to hydroxy acid and analyzing with NMR technique.展开更多
A new Pb（II）-based coordination polymer, [Pb（L）]n （1）, was hydrothermally synthesized and its structure was determined by single-crystal X-ray diffraction （H2L = octane- 1,8-dicarboxylic acid）. Compound 1 crys...A new Pb（II）-based coordination polymer, [Pb（L）]n （1）, was hydrothermally synthesized and its structure was determined by single-crystal X-ray diffraction （H2L = octane- 1,8-dicarboxylic acid）. Compound 1 crystallizes in orthorhombic, space group Pnma with a = 32.061（4）, b = 7.2597（8）, c = 4.8084（5） A, V= 1119.2（2） A3, Z = 4, C10H1604Pb, Mr = 407.42, Dc = 2.418 g/cm3, F（000） = 760, μ（MoKa） = 15.066 mm-1, R = 0.0270 and wR = 0.0666. In 1, each Pb（II） cation is coordinated by six carboxylate oxygen atoms from four L2- anions. Each L2- anion bridges three Pb（ll） atoms in a μ3：η2：η1：η1 mode to form a 3D framework. The structure of 1 was characterized by IR spectrum and thermogravimetric analysis. Moreover, solid state luminescent property of 1 was also investigated.展开更多
Hydrothermal reaction of naphthalene-1,8-dicarboxylate with Pb Cl_2 leads to a new coordination polymer compound,Pb（C_（12）H_6O_4）.Single-crystal X-ray diffraction analysis reveals that it crystallizes in monoclini...Hydrothermal reaction of naphthalene-1,8-dicarboxylate with Pb Cl_2 leads to a new coordination polymer compound,Pb（C_（12）H_6O_4）.Single-crystal X-ray diffraction analysis reveals that it crystallizes in monoclinic,space group P2_1/c with a = 13.1648（18）,b = 5.3881（8）,c = 14.599（2） A,β = 95.759（2）o,V = 1030.3（3） A^3,Z = 4,Mr = 384.32,Dc = 2.7167 g/cm^3,F（000） = 768,μ（Mo Kα） = 16.37 mm^-1,R = 0.043 and w R = 0.097.The structure of Pb（C_（12）H_6O_4） was refined by two components non-merohedral twinning model with the twin law of（-1000-100.224 0 1） and twinning ratio of 0.736：0.264.In this structure,the Pb atoms are surrounded by five O atoms from ligands into PbO_5 polyhedra,which are further interconnected to form a 2D layer structure parallel to the bc-plane.展开更多
Three d10 tetranuclear complexes,Cd 4(1,8-nap) 4(2,2′-bipy) 4(H2O) 8·6H2O(1,8-nap=naphthalene-1,8-dicarboxylate and 2,2′bipy=2,2′-bipyridine)(1),Cd4(1,8-nap) 4(2,2′-bipy) 4(H2O) 8·6H2O(2) andZn4(1,8-nap)...Three d10 tetranuclear complexes,Cd 4(1,8-nap) 4(2,2′-bipy) 4(H2O) 8·6H2O(1,8-nap=naphthalene-1,8-dicarboxylate and 2,2′bipy=2,2′-bipyridine)(1),Cd4(1,8-nap) 4(2,2′-bipy) 4(H2O) 8·6H2O(2) andZn4(1,8-nap) 4(2,2′-bipy) 4(H2O) 4·2H2O(3),have been synthesized under hydrothermal conditions and characterized by elemental analyses,IR and X-ray diffraction techniques. Complexes 1 and 2 are isomers showing one-dimensional ribbon-like structures connected by O-H···O hydrogen bonds,and the one-dimensional ribbons are further linked into the three-dimensional network by π-πstacking.In complex 3,the intramolecular O-H···O hydrogen bonds just exist in the inner of the single molecule ring to consolidate its structure,and the single molecules are further linked into a two-dimensional layer structure by the π-πstacking interactions.The luminescent properties reveal that all the complexes display luminescent properties in the violet region.展开更多
3-Carboxy-2-pyrazinehydroxamic acid was prepared by a one pot reaction starting from pyrazine-2,3-dicarboxylic anhydride with a high yield, and characterized by IR, Mass spectrum, 1H NMR and 13C NMR spectra and single...3-Carboxy-2-pyrazinehydroxamic acid was prepared by a one pot reaction starting from pyrazine-2,3-dicarboxylic anhydride with a high yield, and characterized by IR, Mass spectrum, 1H NMR and 13C NMR spectra and single-crystal X-ray diffraction. It crystallizes in triclinic, space group Pī with a=4.8659（10）, b=7.4233（15）, c=11.602（2）, α=96.904（2）, β=92.422（3）, γ=107.454（2）°, V=395.51（14）3 , Z=2, Dc=1.689g/cm3 , F（000）=208, μ（MoKα）=0.149 mm-1 , the final R=0.0473 and wR=0.1306 for 2853 observed reflections （I〉2σ （I））. A three-dimensional framework was assembled through intermolecular hydrogen bonding between water and 3-carboxy-2-pyrazine-carbohydroxamic acid molecules.展开更多
Fluoranthene, a four-ring polycyclic aromatic hydrocarbon that is possible genotoxic in nature, has been used as an indicator for assessing polycyclic aromatic hydrocarbon （PAH）-containing pollutants. Microbial degr...Fluoranthene, a four-ring polycyclic aromatic hydrocarbon that is possible genotoxic in nature, has been used as an indicator for assessing polycyclic aromatic hydrocarbon （PAH）-containing pollutants. Microbial degradation is one of the promising methods in removing up PAH-contaminated environments. White-rot fungi have showed the ability to degrade a wide range of PAHs. This study aimed to investigate enzyme production, fungal biomass, and glucose utilization during the biodegradation process of fiuoranthene by a white-rot fungus Pleurotus pulmonarius F043 and to identify the metabolites produced in the degradation process. The extracellular ligninolytic enzyme system of the fungi, producing laccases and peroxidases, was directly linked to the biodegradation of fiuoranthene. The production of ligninolytic enzymes during fluoranthene degradation was related to an increase in the biomass of Pleurotus pulmonarius F043. Fluoranthene removal decreased with an increase in fluoranthene concentrations. The highest biomass production of Pleurotus pulmonarius F043 （〉 4 400 mg L-1） was found in the 10 mg L-1 fluoranthene culture after 30 d of incubation. Two fluoranthene metabolites, naphthalene-l,8-dicarboxylic acid and phthalic acid, were found in the process of fluoranthene degradation. Laccase was revealed as the major enzyme that played an important role in degradation process. Suitable conditions must be found to promote a successful fungal biotransformation augmentation in liquid culture.展开更多
文摘2-Phenylfuran-3,4-dicarboxylic acid anhydride reacted with seven aromatic compounds, of which five gave keto acids in yields of 94%-63%. The structure of the keto acid was elucidated by reducing it to hydroxy acid and analyzing with NMR technique.
基金Supported by the Institute Foundation of Siping City(No.2013036)
文摘A new Pb（II）-based coordination polymer, [Pb（L）]n （1）, was hydrothermally synthesized and its structure was determined by single-crystal X-ray diffraction （H2L = octane- 1,8-dicarboxylic acid）. Compound 1 crystallizes in orthorhombic, space group Pnma with a = 32.061（4）, b = 7.2597（8）, c = 4.8084（5） A, V= 1119.2（2） A3, Z = 4, C10H1604Pb, Mr = 407.42, Dc = 2.418 g/cm3, F（000） = 760, μ（MoKa） = 15.066 mm-1, R = 0.0270 and wR = 0.0666. In 1, each Pb（II） cation is coordinated by six carboxylate oxygen atoms from four L2- anions. Each L2- anion bridges three Pb（ll） atoms in a μ3：η2：η1：η1 mode to form a 3D framework. The structure of 1 was characterized by IR spectrum and thermogravimetric analysis. Moreover, solid state luminescent property of 1 was also investigated.
基金supported by the National Science Foundation of China(No.21201056)
文摘Hydrothermal reaction of naphthalene-1,8-dicarboxylate with Pb Cl_2 leads to a new coordination polymer compound,Pb（C_（12）H_6O_4）.Single-crystal X-ray diffraction analysis reveals that it crystallizes in monoclinic,space group P2_1/c with a = 13.1648（18）,b = 5.3881（8）,c = 14.599（2） A,β = 95.759（2）o,V = 1030.3（3） A^3,Z = 4,Mr = 384.32,Dc = 2.7167 g/cm^3,F（000） = 768,μ（Mo Kα） = 16.37 mm^-1,R = 0.043 and w R = 0.097.The structure of Pb（C_（12）H_6O_4） was refined by two components non-merohedral twinning model with the twin law of（-1000-100.224 0 1） and twinning ratio of 0.736：0.264.In this structure,the Pb atoms are surrounded by five O atoms from ligands into PbO_5 polyhedra,which are further interconnected to form a 2D layer structure parallel to the bc-plane.
文摘Three d10 tetranuclear complexes,Cd 4(1,8-nap) 4(2,2′-bipy) 4(H2O) 8·6H2O(1,8-nap=naphthalene-1,8-dicarboxylate and 2,2′bipy=2,2′-bipyridine)(1),Cd4(1,8-nap) 4(2,2′-bipy) 4(H2O) 8·6H2O(2) andZn4(1,8-nap) 4(2,2′-bipy) 4(H2O) 4·2H2O(3),have been synthesized under hydrothermal conditions and characterized by elemental analyses,IR and X-ray diffraction techniques. Complexes 1 and 2 are isomers showing one-dimensional ribbon-like structures connected by O-H···O hydrogen bonds,and the one-dimensional ribbons are further linked into the three-dimensional network by π-πstacking.In complex 3,the intramolecular O-H···O hydrogen bonds just exist in the inner of the single molecule ring to consolidate its structure,and the single molecules are further linked into a two-dimensional layer structure by the π-πstacking interactions.The luminescent properties reveal that all the complexes display luminescent properties in the violet region.
基金supported by the National Natural Science Foundation of China (No. 20861007)Science Foundation of State Key Laboratory of Structural Chemistry (No. 20100009)Science and Technology Research Projects in Department of Education of Jiangxi Province (No. GJJ08026)
文摘3-Carboxy-2-pyrazinehydroxamic acid was prepared by a one pot reaction starting from pyrazine-2,3-dicarboxylic anhydride with a high yield, and characterized by IR, Mass spectrum, 1H NMR and 13C NMR spectra and single-crystal X-ray diffraction. It crystallizes in triclinic, space group Pī with a=4.8659（10）, b=7.4233（15）, c=11.602（2）, α=96.904（2）, β=92.422（3）, γ=107.454（2）°, V=395.51（14）3 , Z=2, Dc=1.689g/cm3 , F（000）=208, μ（MoKα）=0.149 mm-1 , the final R=0.0473 and wR=0.1306 for 2853 observed reflections （I〉2σ （I））. A three-dimensional framework was assembled through intermolecular hydrogen bonding between water and 3-carboxy-2-pyrazine-carbohydroxamic acid molecules.
基金supported by the Fundamental Research Grant Scheme(FRGS)of Ministry of Education,Malaysia(No.R.J130000.7809.4F465the Science Fund of Ministry of Science,Technology and Innovation,Malaysia(No.R.J130000.7909.4S110)
文摘Fluoranthene, a four-ring polycyclic aromatic hydrocarbon that is possible genotoxic in nature, has been used as an indicator for assessing polycyclic aromatic hydrocarbon （PAH）-containing pollutants. Microbial degradation is one of the promising methods in removing up PAH-contaminated environments. White-rot fungi have showed the ability to degrade a wide range of PAHs. This study aimed to investigate enzyme production, fungal biomass, and glucose utilization during the biodegradation process of fiuoranthene by a white-rot fungus Pleurotus pulmonarius F043 and to identify the metabolites produced in the degradation process. The extracellular ligninolytic enzyme system of the fungi, producing laccases and peroxidases, was directly linked to the biodegradation of fiuoranthene. The production of ligninolytic enzymes during fluoranthene degradation was related to an increase in the biomass of Pleurotus pulmonarius F043. Fluoranthene removal decreased with an increase in fluoranthene concentrations. The highest biomass production of Pleurotus pulmonarius F043 （〉 4 400 mg L-1） was found in the 10 mg L-1 fluoranthene culture after 30 d of incubation. Two fluoranthene metabolites, naphthalene-l,8-dicarboxylic acid and phthalic acid, were found in the process of fluoranthene degradation. Laccase was revealed as the major enzyme that played an important role in degradation process. Suitable conditions must be found to promote a successful fungal biotransformation augmentation in liquid culture.
