Zhiqing Gao

Liaocheng Teachers University, Tungchangfu, Shandong Sheng, China

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Publications (10)3.47 Total impact

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    ABSTRACT: In the title compound, [Sn(CH3)3(C7H7N2O2S)(H2O)], the Sn(IV) atom has a distorted trigonal-bipyramidal coordination geometry, with one carboxyl-ate O atom of the 2-(4-methyl-pyrimidine-2-sulfan-yl)acetate ligand and the O atom of a water mol-ecule in axial positions, and three methyl groups in equatorial positions. In the crystal, mol-ecules are linked via O-H⋯O and O-H⋯N hydrogen bonds, forming double-stranded chains propagating along [010].
    Acta Crystallographica Section E Structure Reports Online 06/2013; 69(Pt 6):m313. DOI:10.1107/S1600536813012622 · 0.35 Impact Factor
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    Zhiqing Gao
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    ABSTRACT: The asymmetric unit of the title compound, C17H16Br2N4S, contains two independent mol-ecules in which the benzene rings form dihedral angles of 20.0 (1) and 55.3 (1)°. In the crystal, a pair of N-H⋯S hydrogen bonds link the two different independent mol-ecules into a dimer.
    Acta Crystallographica Section E Structure Reports Online 05/2013; 69(Pt 5):o723. DOI:10.1107/S1600536813009720 · 0.35 Impact Factor
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    ABSTRACT: In the title mol-ecule, C(18)H(19)N(3)O(2), the fused cyclo-hexenone and pyran rings adopt sofa conformations. Inter-molecular N-H⋯N and N-H⋯O hydrogen bonds link mol-ecules into corrugated layers parallel to the bc plane.
    Acta Crystallographica Section E Structure Reports Online 11/2011; 67(Pt 11):o3067. DOI:10.1107/S1600536811043662 · 0.35 Impact Factor
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    ABSTRACT: In the title compound, C(16)H(13)ClN(2)O(2)center dot C(2)H(6)O, the fused cyclohexene and pyran rings adopt envelope and flattened boat conformations, respectively. In the crystal, N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds link the chromene and ethanol solvent molecules into infinite chains along the c axis, and N-H center dot center dot center dot N hydrogen bonds link these chains into a three-dimensional framework. Weak C-H center dot center dot center dot pi interactions are also present.
    Acta Crystallographica Section E Structure Reports Online 11/2011; 67(Pt 11):o3099. DOI:10.1107/S1600536811043650 · 0.35 Impact Factor
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    ABSTRACT: The title compound, C(17)H(16)N(2)O(3), crystallizes with two independent mol-ecules in the asymmetric unit. In both mol-ecules, the fused cyclo-hexenone ring adopts a sofa conformation. In the crystal, N-H⋯N and N-H⋯O hydrogen bonds link the mol-ecules into corrugated layers parallel to the (101) plane.
    Acta Crystallographica Section E Structure Reports Online 11/2011; 67(Pt 11):o3100. DOI:10.1107/S1600536811043674 · 0.35 Impact Factor
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    ABSTRACT: In the title mol-ecule, C(17)H(18)N(4)O, the two phenyl rings form a dihedral angle of 18.15 (17)°. In the crystal, pairs of inter-molecular N-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric dimers. Weak inter-molecular C-H⋯O inter-actions further link the dimers into chains running along [010].
    Acta Crystallographica Section E Structure Reports Online 11/2010; 66(Pt 11):o2901. DOI:10.1107/S1600536810042121 · 0.35 Impact Factor
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    ABSTRACT: In the title compound, [Sn(C(6)H(5))(2)(C(11)H(11)NO(4))], the tin(IV) atom is penta-coordinated in a distorted trigonal-bipyramidal SnC(2)NO(2) geometry. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric dimers. Weak C-H⋯O inter-actions further link the dimers into chains extending in [010].
    Acta Crystallographica Section E Structure Reports Online 11/2010; 66(Pt 11):m1373. DOI:10.1107/S1600536810039449 · 0.35 Impact Factor
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    ABSTRACT: The title compound, C(9)H(12)N(4)O, crystallizes with two independent mol-ecules in the asymmetric unit. In the crystal, inter-molecular N-H⋯O and N-H⋯N hydrogen bonds link the mol-ecules into paired ribbons propagated in [100]. The crystal studied was a twin (twin law 00/00/001) with a minor component of 25%.
    Acta Crystallographica Section E Structure Reports Online 10/2010; 66(Pt 10):o2691. DOI:10.1107/S1600536810038353 · 0.35 Impact Factor
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    ABSTRACT: In the title compound, C(18)H(14)N(2)O(2)center dot H(2)O, the dihedral angle between the benzene ring and the naphthalene system is 5.18 (10)degrees. Intramolecular N-H center dot center dot center dot O hydrogen bonds influence the molecular conformation. In the crystal, intermolecular N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds are observed as well as pi-pi interactions between the phenyl ring and the substituted ring of the naphthalene [centroid-centroid distance = 3.676 (11) angstrom].
    Acta Crystallographica Section E Structure Reports Online 01/2009; 66(Pt 1):o95. DOI:10.1107/S160053680905212X · 0.35 Impact Factor
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    ABSTRACT: In the title compound, C(13)H(16)N(2)O, the cyclo-hexane ring adopts a chair conformation. In the crystal structure, inter-molecular N-H⋯O and C-H⋯O hydrogen bonds link the mol-ecules into chains propagating in [001].
    Acta Crystallographica Section E Structure Reports Online 01/2009; 66(Pt 1):o94. DOI:10.1107/S1600536809052143 · 0.35 Impact Factor