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Dive into the research topics where Xiao-Qing Zeng is active.

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Featured researches published by Xiao-Qing Zeng.


Journal of Coordination Chemistry | 2009

Two complexes (Cu, Zn) with 1,10-phenanthroline and a tridentate amino-Schiff-base: crystal structures, spectra, thermogravimetric analyses and superoxide dismutase activity

Jing Han; Yong-Heng Xing; Che Wang; Peng Hou; Feng-Ying Bai; Xiao-Qing Zeng; Xing-Jing Zhang; Maofa Ge

Two transition metal (Zn, Cu) complexes with a Schiff base (salicylideneglycine) and 1,10-phenanthroline: (C9H7NO3)Zn(C12H8N2)(H2O) (1) and (C9H7NO3)Cu(C12H8N2) (2) have been synthesized and characterized, including crystal structures, spectral characterization, thermogravimetric analyses and quantum chemistry calculations. X-ray crystallographic analysis shows the zinc to be six-coordinate mode, forming a slightly distorted octahedral geometry. The structure of 2 can be evaluated by the Addison distortion index (τ = 0.17), which indicates that the coordination environment of Cu is distorted slightly from square pyramidal (SP). The superoxide dismutase mimetic activity of the complexes was investigated by NBT-illumination. Complex 2 (IC50 = 6.15 µM) has better SOD–like activity than 1 (IC50 = 0.79 µM), although the SOD-like activity for 2 is not higher than some reported, it shows the possibility of SOD-like activity for the complexes with this amino-Schiff-base ligand (salicylideneglycine).


Journal of Coordination Chemistry | 2010

A melamine–adipate-bridged binuclear copper complex with supramolecular architecture: synthesis, structures, and properties of [Cu2(MA)(ad)2]·H2O and (MA)·(H2ad)·H2O

Hai-Yan Zhao; Feng-Ying Bai; Yong-Heng Xing; Zhang-Peng Li; Yun-Zhu Cao; Xiao-Qing Zeng; Maofa Ge

Complexes of melamine with adipic acid and Cu(CH3COO)2 · H2O, [Cu2(MA)(ad)2] · H2O (1), and (MA) · (H2ad) · H2O (2) (MA = melamine; H2ad = adipic acid) have been synthesized under hydrothermal conditions and characterized by elemental analysis, infrared, UV-Vis, and single crystal X-ray diffraction. Both crystallized in the triclinic space group P-1. In 1, MA and adipate bond to copper to construct a 3-D supramolecular framework in an unusual noninterpenetrated pseudo-primitive cubic topology constructed from a four-connected binuclear Cu(II) secondary building unit. A variety of intra- or inter-molecular hydrogen bonds exist. In 2, the 3-D supramolecular structure is formed through strong interactions among MA, adipic acid, and lattice water. Thermal analysis, photoluminescence, and calculations were also performed.


Journal of Chemical Physics | 2006

Evidence of the formation and conversion of unstable thionyl isocyanate: Gas-phase spectroscopic studies

Weigang Wang; Li Yao; Xiao-Qing Zeng; Maota Ge; Zheng Sun; Dianxun Wang; Yi-hong Ding

Thionyl diisocyanate which is unstable at ambient temperature is generated from a heterogeneous reaction of gaseous thionyl dichloride with silver cyanate and studied for the first time in the gas phase at 298 K. N-isocyanatoformyl sulfinylimide is also observed with photoelectron spectroscopy in the gas phase for the first time. The conversion of thionyl diisocyanate to N-isocyanatoformyl sulfinylimide via 1,3 shift at different temperatures is studied by using photoelectron spectroscopy and mass spectroscopy with the help of theoretical computations. On the basis of combined observations and quantum chemical calculations, possible 1,3-isocyanato shifts and dissociation processes for thionyl isocyanate and its cation have been discussed in detail.


Journal of Molecular Structure-theochem | 2005

Structures and properties of the hydrogen-bond complexes : Theoretical studies for the coupling modes of the pyrazole-imidazole system

Qiao Sun; Zhen Li; Xiao-Qing Zeng; Maofa Ge; Dianxun Wang


Inorganic Chemistry | 2005

Nitrosyl isocyanate (ONNCO): gas-phase generation and a HeI photoelectron spectroscopy study.

Xiao-Qing Zeng; Maofa Ge; Zheng Sun; Dianxun Wang


Polyhedron | 2009

Synthesis, structure and properties of a series of scorpionate oxovanadium(IV)–carboxylate complexes

Zhang-Peng Li; Yong-Heng Xing; Yun-Zhu Cao; Xiao-Qing Zeng; Maofa Ge; Shu-Yun Niu


Journal of Molecular Structure | 2009

Synthesis, crystal structures and properties of a series of three-dimensional lanthanide coordination polymers with the rigid and flexible mixed dicarboxylate ligands of 1,4-benzene dicarboxylic acid and succinic acid

Chun-Guang Wang; Yong-Heng Xing; Zhang-Peng Li; Jing Li; Xiao-Qing Zeng; Maofa Ge; Shu-Yun Niu


Inorganic Chemistry | 2006

Gas-phase generation and electronic structure investigation of chlorosulfanyl thiocyanate, ClSSCN.

Li Yao; Maofa Ge; Weigang Wang; Xiao-Qing Zeng; Zheng Sun; Dianxun Wang


Journal of Molecular Structure | 2009

Synthesis, structure and properties of three new oxidovanadium complexes containing a tridentate salicylaldehydeglycine

Hai-Yan Zhao; Yong-Heng Xing; Yun-Zhu Cao; Zhang-Peng Li; Dong-Ming Wei; Xiao-Qing Zeng; Maofa Ge


Journal of Physical Chemistry A | 2006

Bis(trifluoroaceto) disulfide (CF3C(O)OSSOC(O)CF3): a HeI photoelectron spectroscopy and theoretical study.

Xiao-Qing Zeng; Maofa Ge; Zheng Sun; Dianxun Wang

Collaboration


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Maofa Ge

Chinese Academy of Sciences

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Dianxun Wang

Chinese Academy of Sciences

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Yong-Heng Xing

Liaoning Normal University

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Zheng Sun

Chinese Academy of Sciences

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Li Yao

Chinese Academy of Sciences

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Shu-Yun Niu

Liaoning Normal University

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Weigang Wang

Chinese Academy of Sciences

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Zhang-Peng Li

Liaoning Normal University

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Lin Du

Shandong University

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Hai-Yan Zhao

Liaoning Normal University

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