Dong-Liang Miao

Guangdong Ocean University, Tsamkong, Guangdong, China

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Publications (25)10.85 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Two new isostructural coordination polymers, namely, [Ln(nbtc)·2H2O]n [Ln = Eu (1), Tm (2)] (H3nbtc = 5-nitrobenzene-1,2,3-tricarboxylic acid), have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and single crystal X-ray diffraction. Both compounds are sandwich-like 2D layered network built by the 1D Ln-carboxylate chains and nbtc3− linkers, displaying the same 3D supramolecular network via intermolecular hydrogen bonds. The photoluminescence and lifetime of 1 in the solid state has also been investigated.
    Journal of Cluster Science 06/2012; 23(2). · 1.11 Impact Factor
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    ABSTRACT: In the title compound, [Cd(C(10)H(7)N(6))(2)(H(2)O)(2)], the Cd(II) atom lies on an inversion centre and is coordinated by four N atoms from 5-[4-(1H-imidazol-1-yl)phen-yl]tetra-zol-1-ide ligands and two O atoms from the coordinated water mol-ecules in an octa-hedral arrangement. The complex polymeric chains are inter-connected via inter-molecular water O-H⋯N hydrogen bonds into a three-dimensional network.
    Acta Crystallographica Section E Structure Reports Online 05/2012; 68(Pt 5):m585-6. · 0.35 Impact Factor
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    ABSTRACT: The title mol-ecule, C(13)H(8)N(4), is is essentially planar [r.m.s. deviation for all non-H atoms = 0.025 (3) Å]. In the crystal, mol-ecules are connected through one weak bifurcated N-H⋯(N,N) hydrogen bond and three π-π stacking inter-actions between pyridine and imidazole rings [centroid-centroid distance = 3.631 (8) Å] and between pyridine and benzene rings [centroid-centroid distances = 3.675 (5) and 3.666 (2) Å].
    Acta Crystallographica Section E Structure Reports Online 05/2012; 68(Pt 5):o1448. · 0.35 Impact Factor
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    ABSTRACT: In the title compound, C(10)H(8)N(6), the tetra-zole and benzene rings are close to being coplanar [dihedral angle = 9.90 (16)°], but the imidazole ring is rotated 37.18 (09)° out of the benzene plane. In the crystal, mol-ecules are connected through tetra-zole-imidazole N-H⋯N hydrogen bonds, giving rise to zigzag chains, which extend along [010].
    Acta Crystallographica Section E Structure Reports Online 05/2012; 68(Pt 5):o1274. · 0.35 Impact Factor
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    ABSTRACT: In the title compound, [Mn(C(10)H(7)N(6))(2)(H(2)O)(4)]·2H(2)O, the Mn(2+) lies on a twofold rotation axis and is six-coordinated by two N atoms from the cis-related monodentate 5-[4-(imidazol-1-yl)phen-yl]tetra-zolide ligands and four O atoms from the coordinated water mol-ecules. The complex mol-ecules are connected via water O-H⋯O and O-H⋯N hydrogen bonds and weak π-π stacking inter-actions between the benzene rings [minimum ring centroid separation = 3.750 (6) Å] into a three-dimensional polymeric structure. The imidazolyl group of the ligand is partially disordered over two sets of sites with refined occupancies of 0.531 (7):0.469 (7).
    Acta Crystallographica Section E Structure Reports Online 04/2012; 68(Pt 4):m433-4. · 0.35 Impact Factor
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    ABSTRACT: In the title complex polymer, [Sr(C(10)H(7)N(6))(2)(H(2)O)(2)](n), the Sr(II) atom lies on an inversion centre and is coordinated by four N atoms from two bidentate bridging trans-related 5-[4-(1H-imidazol-1-yl)phen-yl]tetra-zolide ligands [Sr-N = 2.387 (4) Å for the tetrazolide moiety and Sr-N = 2.273 (5) Å for the imidazole moiety], and by two O atoms from water mol-ecules [Sr-O = 2.464 (4) Å], giving a distorted octa-hedral coordination. Pairs of ligand bridges link the complex units, forming chains which extend along [111] and are inter-associated through O(water)-H⋯N hydrogen bonds, giving a two-dimensional network structure parallel to (001). Weak π-π stacking inter-actions between the benzene and imidazole rings are also present [minimum ring centroid separation = 3.691 (4) Å].
    Acta Crystallographica Section E Structure Reports Online 04/2012; 68(Pt 4):m523-4. · 0.35 Impact Factor
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    ABSTRACT: In the title compound, [Co(C(7)H(7)N(2)O(4))(2)(H(2)O)(2)]·3H(2)O, the Co(II) cation, located on an inversion center, is N,O-chelated by two 5-carboxy-2-ethyl-1H-imidazole-4-carboxylate anions and further coordinated by two water mol-ecules in a distorted octa-hedral geometry. Only one carboxy group of the anion is deprotonated, and the two carboxyl groups of the same anion are linked via an intra-molecular O-H⋯O hydrogen bond. One of the lattice water mol-ecules is located on an inversion center, its H atom equally disordered over two positions. One of H atoms of another lattice water mol-ecules is also equally disordered over two sites. Water H atoms and the amino H atom all are involved in an inter-molecular hydrogen-bonded network in the crystal.
    Acta Crystallographica Section E Structure Reports Online 04/2012; 68(Pt 4):m373-4. · 0.35 Impact Factor
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    ABSTRACT: Three new coordination polymers based on 2-ethyl-imidazole-4,5-dicarboxylate with 1,10-phenanthroline as ligands, Pb(HEIDC)(phen)2 (1), [Zn(EIDC)(phen)]n (2) and {[Ba(H2EIDC)2(phen)]·(phen)2·[Ba(H2EIDC)(HEIDC)(phen)]}n (3) (H3EIDC = 2-ethyl-1Himidazole-4,5-dicarboxylate; phen = 1,10-phenanthroline), have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and single crystal X-ray diffraction. Complex 1 displays a tetranuclear square constructed of four Pb(II) centers, four HEIDC and eight phen, resulting in a 3D network with a 1D open channel along the c axis via C-H…O hydrogen bonds, C-H···π and π-π stacking interactions. Complex 2 is an infinite zigzag chain resulting in the final 3D supramolecular framework via C-H···O and π-π stacking interactions. Complex 3 is composed of two individual Ba chains, exhibiting a 3D framework via O–H···O, O–H···N hydrogen bonds and π-π stacking interactions. The photoluminescences of 1 and 2 in the solid state have been investigated; 1 exhibits green photoluminescence in the solid state at room temperature.
    Journal of Coordination Chemistry - J COORD CHEM. 01/2012;
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    ABSTRACT: In the title complex, [Cd(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·2C(3)H(7)NO, the six-coordinate Cd(II) ion is in a slightly distorted octa-hedral environment, defined by two O atoms from two coordinated water mol-ecules and two carboxyl-ate O atoms and two N atoms from two N,O-bidentate 5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ate ligands. In the crystal, complex mol-ecules and dimethyl-formamide solvent mol-ecules are linked by O-H⋯O and N-H⋯O hydrogen bonds into a two-dimensional supra-molecular structure. The propyl groups of the ligands are disordered over two conformations with refined occupancies of 0.680 (7) and 0.320 (7).
    Acta Crystallographica Section E Structure Reports Online 12/2011; 67(Pt 12):m1870-1. · 0.35 Impact Factor
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    ABSTRACT: The title compound, [Sr(C(10)H(6)NO(2))(2)(H(2)O)(2)](n), contains an eight-coordinate Sr(II) ion displaying a distorted square-anti-prismatic geometry, two quinoline-3-carboxyl-ate ligands and two terminal water mol-ecules. The Sr(II) atom is surrounded by six carboxyl-ate O atoms from four separate quinoline-3-carboxyl-ate ligands and two O atoms from two coordinated water mol-ecules. The bridging carboxyl-ate O atoms [Sr-O = 2.498 (3) and 2.495 (3) Å] link Sr(II) atoms, forming a chain substructure extending along the c axis. The chains are linked by O-H⋯N and O-H⋯O hydrogen bonds, giving a three-dimensional framework structure.
    Acta Crystallographica Section E Structure Reports Online 10/2011; 67(Pt 10):m1386-7. · 0.35 Impact Factor
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    ABSTRACT: The title compound, C(13)H(9)NO(4), crystallizes in a zwitterionic form with the pyridine N atom protonated and the carboxyl OH group deprotonated. The benzene and pyridinium rings are inclined with a dihedral angle of 31.42 (14)° between them. A previous report of this stucture claims, we believe incorrectly, that neither of the carboxyl-ate groups is deprotonated [Zhang et al. (2010 ▶). Acta Cryst. E66, o2928-o2928]. In the crystal, inter-molecular O-H⋯O, N-H⋯O and weak C-H⋯O hydrogen-bonding inter-actions link adjacent mol-ecules into a three-dimensional supra-molecular network.
    Acta Crystallographica Section E Structure Reports Online 06/2011; 67(Pt 6):o1353. · 0.35 Impact Factor
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    ABSTRACT: In the title compound, C(7)H(8)N(2)O(4)·H(2)O, the imidazole N atom is protonated and one of the carboxyl-ate groups is deprontonated, forming a zwitterion. The two carboxyl groups are are approximately coplanar with the imidazole ring [O-C-C-C torsion angles = -176.8 (2) and 2.9 (4)° for one group and -4.6 (3) and 176.4 (2)° for the other] and have an intra-molecular O-H⋯O hydrogen bond between them. The water mol-ecule is linked to the organic mol-ecules via an N-H⋯O hydrogen bonds. Inter-molecular O-H⋯O and N-H⋯O hydrogen bonds are found in the crystal structure.
    Acta Crystallographica Section E Structure Reports Online 04/2011; 67(Pt 4):o996-7. · 0.35 Impact Factor
  • Shi-Jie Li, Wen-Dong Song, Dong-Liang Miao, De-Yun Ma
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    ABSTRACT: In the centrosymmetric dinuclear anions of the title bimetallic complex, {[Mg(H(2)O)(6)][Cu(2)(C(8)H(2)NO(7))(2)]·2H(2)O}(n), each Cu(II) ion is strongly coordinated by four O atoms in a distorted square-planar geometry. Two of these O atoms belong to phenolate groups and the other two to carboxylate groups from 5-nitro-2-oxidoisophthalate (L1) trianions, derived from 5-nitrobenzene-1,2,3-tricarboxylic acid (O(2)N-H(3)L). The phenolate O atoms bridge the two Cu(II) ions in the anion. In addition, each Cu(II) cation interacts weakly with a symmetry-related carboxylate O atom of an adjacent L1 ligand, giving a square-pyramidal coordination geometry. The copper residue forms a ladder-like linear coordination polymer via L1 ligands. The [Mg(H(2)O)(6)](2+) cations sit on centres of inversion. The polymeric anions, cations and free water molecules are self-assembled into a three-dimensional supramolecular network via O-H···O hydrogen bonds.
    Acta Crystallographica Section C Crystal Structure Communications 04/2011; 67(Pt 4):m105-7. · 0.78 Impact Factor
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    ABSTRACT: In the title complex, [Ca(C(10)H(6)NO(2))(2)(H(2)O)(2)](n), the Ca(II) ion is eight-coordinated by six carboxyl-ate O atoms from four separate quinoline-3-carboxyl-ate ligands, two of which are bidentate chelate and two bridging, and two water mol-ecules in a distorted square-anti-prismatic geometry. The bridging groups form a polymeric chain substructure extending along the c axis, the chains being connected by coordinated-water O-H⋯N and O-H⋯O(carboxyl-ate) hydrogen bonds into a three-dimensional framework structure.
    Acta Crystallographica Section E Structure Reports Online 11/2010; 66(Pt 11):m1441-2. · 0.35 Impact Factor
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    ABSTRACT: In the title complex, [Co(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·3.5H(2)O, the Co(II) cation is six-coordinated by two H(2)pimda(-) ligands (H(3)pimda is 2-propyl-1H-imidazole-4,5-carboxylic acid) and two water mol-ecules in a distorted octa-hedral environment. The crystal structures features a three-dimensional network stabilized by extensive O-H⋯O and N-H⋯O hydrogen bonds. The propyl groups of the ligands are disordered over two sets of sites with refined occupancies of 0.673 (8):0.327 (8) and 0.621 (17):0.379 (17). One of the water mol-ecules is located on a site with half-occupancy.
    Acta Crystallographica Section E Structure Reports Online 01/2010; 67(Pt 1):m106-7. · 0.35 Impact Factor
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    ABSTRACT: In the title compound, {[Cd(C(9)H(4)N(2)O(4))(C(3)H(7)NO)(H(2)O)]·2H(2)O}(n), the Cd(II) atom is coordinated by one N atom and three O atoms from four different 1H-benzimidazole-5,6-dicarboxyl-ate (Hbidc) ligands, one O atom from one dimethyl-formamide ligand, and one O atom from a water mol-ecule in a distorted octa-hedral geometry. The Hbidc ligands connect the Cd atoms into a two-dimensional network parallel to (001). N-H⋯O and O-H⋯O hydrogen bonds involving the water molecules are observed in the crystal structure.
    Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 2):m209-10. · 0.35 Impact Factor
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    ABSTRACT: In the title complex, [Ni(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·2C(3)H(7)NO, the Ni(II) atom is six-coordinated by two N,O-bidentate 5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ate ligands and two water mol-ecules in a distorted octa-hedral environment. The methyl C and H atoms of the two ligands are disordered over two sets of sites in 0.74 (2):0.26 (2) and 0.57 (8):0.43 (8) ratios. A supra-molecular network is stabilized by intra- and inter-molecular N-H⋯O and O-H⋯O hydrogen bonds involving the ligands, coordinated water mol-ecules and dimethyl-formamide solvent mol-ecules.
    Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 3):m280. · 0.35 Impact Factor
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    ABSTRACT: In the title complex, [Ni(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·4H(2)O, the Ni(II) ion is coordinated in a slightly distorted octa-hedral environment formed by two bis-chelating H(2)pimda (H(3)pimda is 2-propyl-1H-4,5-dicarb-oxy-lic acid) ligands and two coordinated water mol-ecules. In the crystal structure, a three-dimensional framework is formed by inter-molecular O-H⋯O and N-H⋯O hydrogen bonds involving the solvent water mol-ecules, coordinated water mol-ecules, carboxyl-ate O atoms and the protonated N atoms of the H(2)pimda ligands. The propyl groups of each H(2)pimda ligand are disordered over two sets of sites with refined occupancies of 0.50 (2):0.50 (2) and 0.762 (11):0.238 (11). In one water solvent mol-ecule, one of the H atoms was refined as disordered over two sites of equal occupancy.
    Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 8):m897-8. · 0.35 Impact Factor
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    ABSTRACT: In the title complex, [Mn(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·3.5H(2)O, the Mn(II) cation is six-coordinated by two N,O-bidentate H(2)pimda(-) ligands (H(2)pimda(-) = 5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ate) and two water mol-ecules in a distorted octa-hedral environment. The complete solid-state structure can be described as a three-dimensional supra-molecular framework stabilized by a wide range of O-H⋯O and N-H⋯O hydrogen bonds. The propyl groups of H(2)pimda(-) are disordered over two sets of sites with refined occupancies of 0.759 (5):0.241 (5) and 0.545 (7):0.455 (7).
    Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 9):m1096-7. · 0.35 Impact Factor
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    Lan-Zhen He, Shi-Jie Li, Wen-Dong Song, Dong-Liang Miao
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    ABSTRACT: In the title complex, [Cu(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·2C(3)H(7)NO, the Cu(II) ion, lying on an inversion center, is six-coordinated in a slightly distorted octa-hedral geometry. Two N atoms and two O atoms from two H(2)pimda (H(3)pimda is 2-propyl-1H-4,5-dicarb-oxy-lic acid) ligands are in the equatorial plane. The axial positions are occupied by two O atoms from two water mol-ecules. A two-dimensional supra-molecular network parallel to (001) is constructed by N-H⋯O and O-H⋯O hydrogen bonds. An intra-molecular O-H⋯O hydrogen bond is also observed.
    Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 8):m896. · 0.35 Impact Factor