Liang-Quan Sheng

Anhui University, Luchow, Anhui Sheng, China

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Publications (24)27.75 Total impact

  • Shui-Sheng Chen · Liang-Quan Sheng · Yue Zhao · Zhao-Di Liu · Rui Qiao · Song Yang
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    ABSTRACT: Six Zn(II) coordination polymers, [Zn(H2L)(Hipa-CH3)2]·2H2O (1), [Zn2(HL)2(ipa-CH3)] (2), [Zn2(HL)2(ipa-NO2)]·2H2O (3), [Zn2(HL)2(ipa-NO2)] (4), [Zn2(HL)(BTCA)(H2O)]·H2O (5), and [Zn3(HL)3(BTCA)] (6), were synthesized by reactions of Zn(II) salts with rigid ligand 1-(1H-imidazol-4-yl)-4-(4H-tetrazol-5-yl)benzene (H2L) and different carboxylic acids, 5-methyl-isophthalic acid (H2ipa-CH3), 5-nitro-isophthalic acid (H2ipa-NO2), and 1,2,4-benzenetricarboxylic acid (H3BTCA). Complexes 1 and 2 were formed under different pH values, and 1 is a one-dimensional (1D) chain extended by hydrogen bonds and π-π stacking interactions to form a three-dimensional (3D) supramolecular polymer, while 2 exhibits a uninodal 6-connected 3D architecture with (412·63)-pcu topology based on the binuclear Zn(II) secondary building units (SBUs). Polymers 3 and 4 present a pair of pseudopolymorphs with layered-pillared framework. Polymer 3 possesses Zn2(HL-)22+ sheets pillared by the ipa-NO22- ligand to form a 3D net, while 4 builds on the [Zn2(HL)(ipa-NO2)]+ layer pillared by HL- ligand. Complex 5 is a (3,8)-connected tfz-d 3D net with point (Schläfli) symbol (43)2(46·618·84) based on the tetranuclear [Zn4(COO)4] SBUs, while the BTCA3- ligands act as three-connector pillars to link adjacent [Zn3(HL-)3]3- layers into a 3D net for 6. Complexes 1-6 exhibit intense light blue emission in the solid state at room temperature, and activated sample 6 shows highly selective CO2 uptake over N2 and H2.
    No preview · Article · Dec 2015 · Crystal Growth & Design
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    Hong Zhang · Xue-Yue Jiang · Liang-Quan Sheng · Hua-Jie Xu
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    ABSTRACT: C17H22N4O2, monoclinic, P21/c (no. 14), a = 14.382(1) Å, b = 11.3604(8) Å, c = 10.8996(7) Å, β = 105.73(1)°, V = 1714.1 Å3, Z = 4, Rgt(F) = 0.0417, wRref(F2) = 0.0819, T = 291 K.
    Preview · Article · Dec 2015 · Zeitschrift für Kristallographie. New crystal structures
  • Rui Qiao · Shui-Sheng Chen · Liang-Quan Sheng · Song Yang · Wei-Dong Li
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    ABSTRACT: Four metal-organic coordination polymers [Zn(HL)(H2O)]·4 H2O (1), [Zn(HL)(L1)]·4 H2O (2), [Cu(HL)(H2O)]·3 H2O (3) and [Cu(HL)(L1)]·5 H2O (4) were synthesized by reactions of the corresponding metal(II) salts with semirigid polycarboxylate ligand (5-((4-carboxypiperidin-1-yl)methyl)isophthalic acid hydrochloride, H3L·HCl) or auxiliary ligand (1,4-di(1 H-imidazol-4-yl)benzene, L1). The structures of the compounds were characterized by elemental analysis, FT-IR spectroscopy and single-crystal X-ray diffraction. The use of auxiliary ligand L1 has great influence on the structures of two pairs of complexes 1, 2 and 3, 4. Complex 1 is a uninodal 3-connected rare 2-fold interpenetrating ZnSc net with a Point (Schlafli) symbol of (103) while 2 is a one-dimensional (1D) ladder structure. Compound 3 features a two-dimensional (2D) honeycomb network with typical 63-hcb topology, while 4 is 2D network with (4, 4) sql topology based on binuclear CuII subunits. The non-covalent bonding interactions such as hydrogen bonds, π···π stacking and C–H···π exist in complexes 1–4, which contributes to stabilize crystal structure and extend the low-dimensional entities into high-dimensional frameworks. And the photoluminescent property of 1 and 2 and gas sorption property of 4 have been investigated.
    No preview · Article · May 2015 · Journal of Solid State Chemistry
  • Lei Hu · Xue-Xue Liu · Hua-Jie Xu · Liang-Quan Sheng · Zhao-Di Liu
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    ABSTRACT: C10H9N3O3, monoclinic, P21/c (no. 14), a=11.290(2) Å, b=7.339(1) Å, c=12.238(2) Å, β=101.325(3)°, V=994.3 Å3, Z=4, Rgt(F)=0.0408, wRref(F2)=0.1209, T=296 K.
    No preview · Article · Jan 2015
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    ABSTRACT: Reactions of metal ions with a rigid linear ligand 4-H(2)IBA incorporating 4-imidazolyl and carboxylate functional groups [4-H(2)IBA = 4-(1H-imidazol-4-yl)benzoic acid] under variable reaction conditions gave 11 new coordination polymers, [Cu(4-HIBA)(2)(H2O)(4)] (1), [(CuCuI)-Cu-II(4-HIBA)-(4-IBA)(H2O)(2)]center dot 2.3H(2)O (2), [Cu(4-HIBA)(Cl)] (3), [Cu-3(4-HIBA)(6)]center dot 7.8H(2)O (4), [Cd(4-HIBA)(2)(H2O)]center dot 2H(2)O (5), [Cd(4-HIBA)(2)] (6), [Cd(4-HIBA)(2)] center dot 2DMF (7), [Cd-2(4-HIBA)(4)]center dot H2O (8), [Zn(4-HIBA)(2)].H2O (9), [Zn(4-HIBA)(2)]center dot C2H5OH center dot DMF (10), and [Co(4-HIBA)(2)]center dot 2DMF (11). The copper complexes 1-4 are discrete molecules to three-dimensional (3D) infinite networks. Complexes 1 and 2 formed in different reaction temperatures exhibit a mononuclear motif and one-dimensional (1D) chain, respectively. Compounds 3 and 4 were obtained through controlling reaction solvent systems, and 3 features a two-dimensional (2D) (4,4) network by taking the binuclear [Cu-2(Cl)(2)] as 4-connecting nodes, whereas 4 is a 3-fold interpenetrating mog net with Point (Schlafli) symbol of (4.6(4).8)(2)(4(2).6(2).8(2)). The 4-HIBA(-) ligands act as rod-type two-connectors to connect metal Cd(II) centers into 4-connected 3D frameworks with different topologies: binodal 4-connected network with a Point (Schlafli) symbol of (8(6)) (5) and uninodal (6(5).8) net (6), uninodal 4-connected [2 + 2] interpenetrating (6(6)) dia net (7), and 5-fold interpenetrating dia net (8), respectively. Complex 9 has a 1D double chain structure, while 10 and 11 are isostructural as 7. Fluorescence and gas adsorption properties of the compounds have also been explored.
    No preview · Article · Aug 2014 · Crystal Growth & Design
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    ABSTRACT: A high performance liquid chromatography with fluorescence detection (HPLC-FLD) method for the simultaneous determination of total nitrofuran metabolite residues (furazolidone, furaltadone, nitrofurantoin, and nitrofurazone) in shrimp was developed. The method involves the acid hydrolysis of protein-bound metabolites, followed by the derivatization of the freed metabolites with the new fluorescent derivatization reagent 2-hydroxy-1-naphthaldehyde (HN) and subsequent liquid-liquid extraction (LLE). Separation is achieved on a YMC-Pack Polymer C18 column under alkaline conditions, and the high fluorescence intensity of the derivatives at an emission wavelength Em=463nm (Ex=395nm) enables, for the first time, their simultaneous determination in shrimp at concentrations as low as 1μg/kg by HPLC-FLD. The method was validated using blank shrimp fortified with all four metabolites at 0.5, 1.0 and 2.0μg/kg. Recoveries were >87% with relative standard deviations of <8.1% for all four metabolites. Furthermore, the results obtained by HPLC-FLD were in very good agreement with those obtained by LC-MS/MS analysis.
    No preview · Article · Dec 2013 · Journal of Chromatography A
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    ABSTRACT: A simple and sensitive HPLC method with fluorescence detection (HPLC-FLD) is reported for the simultaneous determination of metabolites of four nitrofuran drugs (furazolidone, furaltadone, nitrofurantoin and nitrofurazone) in pork muscle. The method involves acid hydrolysis of the protein-bound drug metabolites and the conjugation of the released side-chains with a novel fluorescence agent 2-hydroxy-1-naphthaldehyde. After liquid-liquid extraction and effective separation of the derivatives on a YMC-Pack Polymer C18 column at 40°C under alkaline conditions, the high fluorescence intensity of these derivatives at emission wavelength λem = 463 nm enables their simultaneous determination in pork muscle at concentrations as low as 1 µg kg(-1). The method was validated using blank pork muscle fortified with all four metabolites at 0.5, 1.0 and 2.0 µg kg(-1). Recoveries were > 92.3% with RSDs < 8.5% for all four metabolites. The results obtained with HPLC-FLD and LC-MS/MS methods showed very good agreement for pork muscle samples.
    No preview · Article · Nov 2013 · Food Additives and Contaminants - Part A Chemistry, Analysis, Control, Exposure and Risk Assessment
  • Hua-Jie Xu · Liang-Quan Sheng · Ming-Ming Chen · Zhao-Di Liu
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    ABSTRACT: C12H12Cl2N2Zn, monoclinic, P2(1)/c (no. 14), a = 8.615(2) angstrom, b = 10.589(2) angstrom, c = 16.525(2) angstrom, beta = 116.598(6)degrees, V = 1347.9 angstrom(3), Z = 4, R-gt(F) = 0.0247, wR(re)f(F-2) = 0.0697, T = 298 K.
    No preview · Article · Oct 2013
  • Ming-Ming Chen · Shui-Sheng Chen · Liang-Quan Sheng
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    ABSTRACT: C18H17N3O6Zn, triclinic, P (1) over bar (no. 2), a = 10.0780(5) angstrom, b = 10.1678(5) angstrom, c = 10.3591(5) angstrom, a = 83.119(1)degrees, beta = 81.178(2)degrees, gamma = 64.753(1)degrees, V = 947.0 angstrom(3), Z = 2, R-gt(F) = 0.0285, wR(ref)(F-2) = 0.1213, T = 296 K. [GRAPHICS] .
    No preview · Article · Oct 2013 · Zeitschrift für Kristallographie. New crystal structures
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    ABSTRACT: Six new coordination polymers [Cd2(HL)2(pbda)(H2O)2]·4H2O (1), [Cd2(HL)2(mbda)(H2O)2]·6H2O (2), [Cd(H2L)(mmbda)(H2O)] (3), [Cd2(H2L)2(btca) (H2O)2]·4H2O (4), [Zn2(H2L)2(btca)] (5) and [Zn6(H2L)6(btca)3] (6) were synthesized by reactions of cadmium(II)/zinc(II) salts with a rigid ligand 1-(1H-imidazol-4-yl)-3-(4H-tetrazol-5-yl)benzene (H2L) and different carboxylic acids of 1,4-benzenedicarboxylic acid (H2pbda), 1,3-benzenedicarboxylic acid (H2mbda), 5-methyl-1,3-benzenedicarboxylic acid (H2mmbda), 1,2,4,5-benzenetetracarboxylic acid (H4btca), respectively. The structures of the complexes were determined by single crystal X-ray diffraction analysis. Although complexes 1 and 2 possess the same two-dimensional (2D) network with (4·82)-fes topology built from Cd(II)–(HL)− moieties, different coordinated orientation of auxiliary carboxylates of pbda2− and mbda2− pillar the 2D layer into distinct frameworks. Complex 1 is an unusual binodal (3,4)-connected three-dimensional (3D) dmc net with Point (Schläfli) symbol of (4·82)(4·85) while 2 is a rare binodal (3,4)-connected 3D architecture with a (4·6·8)(4·62·83) fsc-3,4-C2/c topology. Complexes 3 and 4 have the same 2D networks with (4,4) topology, and H-bonding or π–π stacking interactions extending the 2D layers into 3D supramolecular frameworks, respectively. Complexes 5 and 6 present a pair of pseudopolymorphs, and 5 is an uninodal (4,4)-connected 3D net with Point (Schläfli) symbol of (62·84)(64·82)2 while 6 is an unprecedented penta-nodal 4-connected net with (4·62·83)2(4·64·8)2(62·84)(64·82)4 topology. The thermal stability and photoluminescent property of the complexes were investigated.
    No preview · Article · Jun 2013 · CrystEngComm
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    ABSTRACT: A high performance liquid chromatography with fluorescence detection (HPLC–FLD) method for the simultaneous determination of total nitrofuran metabolite residues (furazolidone, furaltadone, nitrofurantoin, and nitrofurazone) in shrimp was developed. The method involves the acid hydrolysis of protein-bound metabolites, followed by the derivatization of the freed metabolites with the new fluorescent derivatization reagent 2-hydroxy-1-naphthaldehyde (HN) and subsequent liquid–liquid extraction (LLE). Separation is achieved on a YMC-Pack Polymer C18 column under alkaline conditions, and the high fluorescence intensity of the derivatives at an emission wavelength Em = 463 nm (Ex = 395 nm) enables, for the first time, their simultaneous determination in shrimp at concentrations as low as 1 μg/kg by HPLC–FLD. The method was validated using blank shrimp fortified with all four metabolites at 0.5, 1.0 and 2.0 μg/kg. Recoveries were >87% with relative standard deviations of <8.1% for all four metabolites. Furthermore, the results obtained by HPLC–FLD were in very good agreement with those obtained by LC–MS/MS analysis
    No preview · Article · Jan 2013
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    Hua-Jie Xu · Xue-Yue Jiang · Liang-Quan Sheng · Zhao-Di Liu
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    ABSTRACT: The title compound, C(15)H(9)ClN(2)O(2), adopts an E configuration about the C=N double bond. The mean plane of the isoindoline ring system [maximum deviation = 0.011 (2) Å] is inclined to the chloro-benzene ring by 22.62 (8)°. In the crystal, mol-ecules are connected by C-H⋯O hydrogen bonds, forming chains that propagate along [010].
    Preview · Article · Dec 2011 · Acta Crystallographica Section E Structure Reports Online
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    ABSTRACT: In this study, the pretreated glassy carbon electrode (GCE) was prepared by electrochemical oxidation firstly at +1.75 V for 300 s, and then by electrochemical reduction at –1.75 V for 300 s in 0.1 mol L –1 pH 7.0 phosphate buffer solution (PBS) and used for the determination of dopamine (DA) by cyclic voltammetry (CV). The pretreated GCE gives 100-fold greater current responses for dopamine compared with unpretreated GCE. The effect of pH, pretreated mode, scan rate and concentration of dopamine on the peak current was investigated, and the results indicated that the peak current of dopamine is the highest in 0.1 mol L –1 pH 7.0 PBS and the electrode reaction corresponds to a rate-controlled process. The peak current of the anodic peak and the concentration of dopamine hydrochloride is linear in the range of 1.0 × 10 –7 – 9.0 × 10 –6 mol L –1 and 1.2 × 10 –5 – 8.0 × 10 –5 mol L –1 with correlation coefficients of 0.9973 and 0.9980, and the detection limit is 3.0 × 10 –8 mol/L. It has been successfully applied to the determination of dopamine in dopamine hydrochloride injection with recoveries ranging from 98 to 103%. The proposed method possesses the distinct advantages of simple, appropriate for operation, good reproducibility and cheap instrument.
    Preview · Article · Nov 2011 · International journal of electrochemical science
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    Na-Na Du · Hua-Jie Xu · Liang-Quan Sheng
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    ABSTRACT: In the title compound, C(16)H(16)N(4)O(6), the planes of the isoindole and dinitro-benzene groups make a dihedral angle between of 84.15 (8)°. The N atom of the isoindole group is displaced by 0.2937 (3) Å from the plane through the remaining atoms. An intra-molecular N-H⋯O inter-action occurs. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds occur.
    Preview · Article · Aug 2011 · Acta Crystallographica Section E Structure Reports Online
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    Na-Na Du · Hua-Jie Xu · Chong-Fu Song · Liang-Quan Sheng
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    ABSTRACT: The title compound, C(19)H(21)N(3)O(4), crystallizes with two independent mol-ecules in the asymmetric unit. In both mol-ecules, there is an intra-molecular O-H⋯N hydrogen bond, which correlates with the fact that each mol-ecule adopts an E configuration with respect to the C=N bond. In the crystal, there are C-H⋯O and C-H⋯π inter-actions present.
    Preview · Article · Jul 2011 · Acta Crystallographica Section E Structure Reports Online
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    Liang-Quan Sheng · Hua-Jie Xu · Na-Na Du · Xue-Yue Jiang
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    ABSTRACT: The title compound, C(13)H(12)N(2)O(3), has an E configuration with respect to the C=N bond: the conformation is stabilized by an intramolecular O-H⋯N hydrogen bond. In the crystal, an N-H⋯O interaction links the molecules into a C(4) chain along [100].
    Preview · Article · Dec 2010 · Acta Crystallographica Section E Structure Reports Online
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    Liang-Quan Sheng · Hua-Jie Xu · Na-Na Du · Xue-Yue Jiang
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    ABSTRACT: The title compound, C(14)H(11)N(3)O(3), adopts an E or trans configuration with respect to the C=N bond. In the mol-ecule there is an intra-molecular O-H⋯N hydrogen bond involving the hy-droxy substituent at the 2-positon of the naphthalene ring and the adjacent methyl-ene-amino N atom. The mol-ecule is roughly planar, the dihedral angle between the naphthalene and imidazolidine-2,4-dione mean planes being 8.4 (1)°. In the crystal, pairs of N-H⋯O hydrogen bonds link mol-ecules into inversion dimers. These dimers are futher linked via C-H⋯O inter-actions, forming a three-dimensional network.
    Preview · Article · Jul 2010 · Acta Crystallographica Section E Structure Reports Online
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    Hua-Jie Xu · Na-Na Du · Xue-Yue Jiang · Liang-Quan Sheng · Yu-Peng Tian
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    ABSTRACT: The title compound, C(12)H(11)N(3)O(2), adopts an E or trans configuration with respect to the C=N bond. There is an intra-molecular O-H⋯N hydrogen bond involving the hydroxyl H atom and an N atom of the hydrazine group. In the crystal structure, mol-ecules are connected via N-H⋯O hydrogen bonds, forming a three-dimensional network.
    Preview · Article · May 2009 · Acta Crystallographica Section E Structure Reports Online
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    Hua-Jie Xu · Liang-Quan Sheng · Zhao-Di Liu · Si-Chang Shao
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    ABSTRACT: The title compound, C(14)H(11)FN(2)O(2), adopts an E or trans configuration with respect to the C=N bond. An intra-molecular N-H⋯O hydrogen bond contributes to the relatively planarity of the mol-ecular conformation; the two benzene rings are inclined to one another by 12.5 (2)°. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into chains running parallel to the c axis.
    Preview · Article · Apr 2009 · Acta Crystallographica Section E Structure Reports Online
  • Liang-quan Sheng · Xiang-yang Yan · Hua-jie Xu · Hong-wu Tong · Shao-min Liu
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    ABSTRACT: The interaction of BSA and NIC was investigated by absorption spectra, fluorescence spectroscopy and synchronous fluorescence spectroscopy. In the system of sodium phosphate dibasic-citric acid of 0.1 mol(-1) x L(-1), fluorescence titration showed that the fluorescence intensity of BSA at 342 nm was quenched when NIC was added, NIC was capable of binding with BSA to form a 1:1 complex and the quenching mechanism of BSA affected by NIC was shown to be a static quenching procedure by calculating the binding number n and binding constant K. NIC decreased the intensity of the characteristic absorption peak of BSA, showing that the binding of NIC to BSA had strong impact on protein conformation with the decrease in a-helical content of the protein. Synchronous fluorescence indicated that the binding of NIC to BSA is near tryptophan subunit.
    No preview · Article · Mar 2007 · Guang pu xue yu guang pu fen xi = Guang pu