Xiao-Qing Zeng
Chinese Academy of Sciences
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Publication
Featured researches published by Xiao-Qing Zeng.
Journal of Coordination Chemistry | 2009
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
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
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
Qiao Sun; Zhen Li; Xiao-Qing Zeng; Maofa Ge; Dianxun Wang
Inorganic Chemistry | 2005
Xiao-Qing Zeng; Maofa Ge; Zheng Sun; Dianxun Wang
Polyhedron | 2009
Zhang-Peng Li; Yong-Heng Xing; Yun-Zhu Cao; Xiao-Qing Zeng; Maofa Ge; Shu-Yun Niu
Journal of Molecular Structure | 2009
Chun-Guang Wang; Yong-Heng Xing; Zhang-Peng Li; Jing Li; Xiao-Qing Zeng; Maofa Ge; Shu-Yun Niu
Inorganic Chemistry | 2006
Li Yao; Maofa Ge; Weigang Wang; Xiao-Qing Zeng; Zheng Sun; Dianxun Wang
Journal of Molecular Structure | 2009
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
Xiao-Qing Zeng; Maofa Ge; Zheng Sun; Dianxun Wang