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Poly[(3-nitrobenzoato)(μ3-1,2,4-triazolato)cobalt(II)]
Xu-Liang Qi
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536808043596
Abstract: In the title compound, [Co(C2H2N3)(C7H4NO4)]n, the CoII atom is five-coordinated by three triazolate ligands and one bidentate 3-nitrobenzoate anion in a distorted trigonal-bipyramidal geometry. The triazolate ligand bridges the CoII atoms, generating a two-dimensional net parallel to the ab plane, in which both the CoII atom and the triazolate ligand act as three-connected nodes. Two weak intermolecular C—H...O hydrogen bonds connect the nets.
catena-Poly[[diaqua(4,4′-trimethylenedipyridine-κN)cobalt(II)]-μ-terephthalato-κ2O1:O4]
Xu-Liang Qi
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536808043584
Abstract: The title compound, [Co(C8H4O4)(C13H14N2)2(H2O)2]n, was obtained by the reaction of CoCl2, 4,4′-trimethylenedipyridine and terephthalic acid in a 1:1:1 ratio. The octahedrally coordinated cobalt ions are bridged by 4,4′-trimethylenedipyridine ligands, generating a chain. These chains are further linked by O—H...O and O—H...N hydrogen bonds, giving a three-dimensional network.
Poly[(3,5-dinitrobenzoato)-μ3-triazolato-cobalt(II)]
Xu-Liang Qi
Acta Crystallographica Section E , 2009, DOI: 10.1107/s160053680804155x
Abstract: The title compound, [Co(C2H2N3)(C7H3N2O6)]n, was obtained by the reaction of CoCl2, triazole and 3,5-dinitrobenzoic acid in a 1:1:1 ratio. The Co centre is in a distorted tetrahedral coordination by three N atoms of three different triazole ligands and one O atom of the 3,5-dinitrobenzoate anion.
New approaches for remediation of soils with multiple pollutants
土壤复合污染的联合修复技术研究进展

ZHUANG Xu-Liang,
庄绪亮

生态学报 , 2007,
Abstract: Combined pollution is the main form of soil contamination,i.e.including heavy metals and organic pollutants,constitute the main form of soil contamination.For example,the coexistence of lead and cadmium in soils can interact with each other and consequently increases cadmium mobility.The application of simple physical,chemical and biological remediation methods in combined pollution sites is not satisfactory to mitigate the pollution.Therefore,a combination of different techniques is required to remediate these sites with multiple pollutants to enhance the remediation efficiency and at reasonable cost.Recent example indicates that the combination of chemical oxidation and ultrasonic techniques can transform toluene and xylene in soil into CO and CO2 in very short time.Progress to-date on the effective combination of different techniques to mitigate the soils with multiple pollutants has been discussed in the paper.
Diniconazole
Zhi-Qiang Xiong,Jin-Zhu Chen,Shi-He Wen,Xu-Liang Nie
Acta Crystallographica Section E , 2010, DOI: 10.1107/s160053681004804x
Abstract: The asymmetric unit of the title compound [systematic name: (E)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pent-1-en-3-ol], C15H17Cl2N3O, contains two molecules in which the dihedral angles between the triazole and benzene rings are 9.4 (2) and 35.0 (2)°. In the crystal, the molecules are linked by O—H...N hydrogen bonds, forming C(7) chains propagating in [010].
2,5-Bis(9H-carbazol-9-yl)thiophene
Xu-Liang Jiang,Er-Fang Huang,Guo-Wu Rao
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808039767
Abstract: The molecules of the title compound, C28H18N2S, are built up from two triply-fused rings and one five-membered ring, with dihedral angles of 66.12 (8) and 70.96 (7)° between the central thiophene ring and the two triply-fused rings.
9-(2-Thienyl)-9H-carbazole
Xu-Liang Jiang,Feng-Rong Li,Ren-Hua Zheng
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808037173
Abstract: In the title compound, C16H11NS, the dihedral angles between the fused ring system and the pendant thienyl ring are 86.37 (5) and 57.14 (5)°.
Dichloridotetrakis(diniconazole)cobalt(II)
Chang-Xiang Liu,Xiu-Ying Song,Qian Liu,Xu-Liang Nie
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811031291
Abstract: In the crystal structure of the title compound, [CoCl2(C15H17Cl2N3O)4], the CoII cation lies on an inversion center and has a slightly distorted octahedral coordination geometry. The equatorial positions are occupied by four N atoms from four diniconazole [systematic name: (E)-(RS)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pent-1-en-3-ol] ligands. The axial sites are occupied by two Cl anions. In the two independent organic ligands, the triazole ring is oriented at dihedral angles of 18.28 (14) and 32.15 (14)° with respect to the dichlorophenyl ring. Intermolecular O—H...Cl hydrogen bonds consolidate the crystal packing.
Dichloridotetrakis(diniconazole)nickel(II)
Zhi-Qiang Xiong,Xiu-Ying Song,Xu-Liang Nie
Acta Crystallographica Section E , 2011, DOI: 10.1107/s160053681103128x
Abstract: In the title compound, [NiCl2(C15H17Cl2N3O)4], the Ni atom lies on an inversion center and has an axially extended trans-NiCl2N4 octahedral geometry arising from its coordination by four diniconazole [systematic name: (E)-(RS)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pent-1-en-3-ol] ligands and two chloride ions. In the crystal, O—H...Cl hydrogen bonds link the molecules into [100] chains.
The Connection between Radio and Gamma Ray Emission in Fermi/LAT Blazars
Fan Xu-Liang,Bai Jin-Ming,Liu Hong-Tao,Chen Liang,Liao Neng-Hui
Physics , 2012, DOI: 10.1088/1674-4527/12/11/003
Abstract: We collect the 2LAC and MOJAVE quasi-simultaneous data to investigate the radio-gamma connection of blazars. The cross sample contains 166 sources. The statistic analysis based on this sample confirms positive correlations between these two bands, but the correlations become weaker as the gamma-ray energy increases. The statistic results between various parameters show negative correlations of gamma-ray photon spectral index with gamma-ray loudness for both FSRQs and BL Lacertae objects, positive correlations of gamma-ray variability index with the gamma-ray loudness for FSRQs, a negative correlation of the gamma-ray variability index with the gamma-ray photon spectral index for FSRQs, and negative correlations of gamma-ray photon spectral index with gamma-ray luminosity for FSRQs. These results suggest that the gamma-ray variability may be due to changes inside the gamma-ray emission region like the injected power, rather than changes in the photon density of the external radiation fields, and the variability amplitude tends to be larger as the gamma-rays are closer to the high energy peak of spectral energy distribution. No correlation of variability index found for BL Lacertae objects implies that variability behavior may differ below and above the peak energy.
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