中国科技论文在线

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2005年04月22日

【期刊论文】Binding equilibrium study of phosphotungstic acid and HSA or BSA with UV spectrum, fluorescence spectrum and equilibrium dialysis

梁宏， HUANG Jin， YUAN Yuzhou & LIANG Hong

SCIENCE IN CHINA (Series B) April 2002 Vol. 45 No.2 200～207，-0001，（）：

-1年11月30日

摘要

The binding equilibrium between phosphotungstic acid (H7[P(W2OT)6]

serum albumin,， phosphotungstic acid,， UV spectrum,， fluorescence spectrum,， equilibrium dialysis.，

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2005年04月22日

【期刊论文】Crystal structure of zinc(Ⅱ) complex with thiosemicarbazone of acetone

梁宏， Hong Liang a*， Bin Liu a， Rui-Xiang Hu a and Kai-Bei Yu b

J. Indian Chem. Soc., Vol. 77, October 2000, pp. 486-487，-0001，（）：

-1年11月30日

摘要

Synthesis and crystal structure determination of the title complex are presented. It shows that the zinc atom located in the distorted tetrahedral coordination, is composed of two nitrogen atoms and two sulfur atoms from the two ligand.

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2005年04月22日

【期刊论文】A neutral 2D nanosized molecular square grid: the first vanadium(Ⅱ) coordination polymer of norfloxacin

梁宏， Zhen-Feng Chen a， c，， Hong Liang a， *， Huai-Ming Hu b， Yan Li b， Ren-Gen Xiong c， Xiao-Zeng You c

Inorganic Chemistry Communications 6 (2003) 241-243，-0001，（）：

-1年11月30日

摘要

The hydrothermal reaction of norfloxacin (H-Norf) with NH4VO3 yields an unprecedented neutral nanosized molecular square grid containing a direct coordinate bond between quinololine drug and V(Ⅱ), V(Norf)2·2H2O 1, which is characterized by single Xray determination and IR spectrum as well as TGA.

Crystal structure， Norfloxacin， Vanadium(， Ⅱ)， complex， Hydrothermal synthesis

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2005年04月22日

【期刊论文】Studies on the interaction between Ag and human serum albumin

梁宏， Xing-Can Shen a， b， Hong Liang b， Jun-Huai Guo a， Cheng Song b， Xi-Wen Hea a， *， Yu-Zhou Yuan b

Journal of Inorganic Biochemistry 95 (2003) 124-130，-0001，（）：

-1年11月30日

摘要

The interaction between Ag+ and human serum albumin (HSA) has been intensively studied by means of equilibrium dialysis, ligand-to-metal charge transition (LMCT) bands, circular dichroism (CD) and Raman spectroscopy. Scatchard analysis of the results of 1 equilibrium dialysis indicates the presence of two types of binding sites for Ag+ on HSA, and the orders of magnitude of binding stability 54 constants are found to be 10 5 and 10 4, respectively. During the binding process, a gradual increase in absorbance values of LMCT bands is observed with time-scanning UV absorption spectra, implying the Ag(Ⅰ) centers are continually formed in HSA. The time-scanning CD1 spectra provide evidence that the binding of Ag+ induces HSA to undergo a slow rearrangement of tertiary structure, and to change from 11 the original conformation in the absence of Ag (B-state) to conformation binding with Ag (A-state). The rate constants and activation free energy of A-B transition are calculated. The Raman spectrum of Ag(Ⅰ)-HSA system shows distinct vibration bands at 224 and 246 21cm in the low-frequency region, which significantly reveal the formation of Ag-S and Ag-N bonds. In addition, the electrostatic 1 interaction between Ag+ and negatively charged oxygen is also detected with Raman spectroscopy.

Ag(， Ⅰ)， -serum albumin， Equilibrium constant， Conformation transition， Activation free energy， Coordination analysis

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2005年04月22日

【期刊论文】One-dimensional Anion-chain Containing [Mo206 (pic)2] 2-Unit Connected by Unclassical Hydrogen Bond

梁宏， LIANG， Hong*， CHEN， Xiong-Bin， Zhen-Feng， HU， Rui-Xiang， YU， Kai-Bei

CHINESE JOURNAL.OF CHEMISTRY 2002, 20, 650-656，-0001，（）：

-1年11月30日

摘要

The reaction of picolinic acid (Hpic) and (n-Bu4N)4[MosO26] in the presence of CH3CN gave a supramolecular compound (n-Bu4N)2[Mo2O6(pic)2] (1), and its structure was characterized by elemental analysis, IR spectra and single crystal Xray diffraction analysis. The single crystal X-ray diffraction study shows that the crystal is in monocnnic crystal system, P21/c space group with cell parameters a=0.9941 (2), b=1.3719(2), c=1.8824(2)nm, β=100.840(10)°, Mr=508.50, V=2.5214(9)nm3, F(000)=1072. Compound 1 is a dimer through two μ2-O bridging to two MoO3 (pic)-unit, then connected one-dlmensional anion-chain by undassical hy-drogen bonding, and the anion-chain across the channels formed via (n-Bu4N)+ cations. By means of undassical hydrogen bonding, the anion-chain and cationchannels assemble into three-dimensional supramolecular networks.

molybdenum (， Ⅵ)， complex,， crystal structure,， hydrogen bonding,， supramolecular networks

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