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    24 August 1994, Volume 10 Issue 3
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    Articles
    Studies on Intramolecular Stacking Interaction of Ternary Complexes M (Ⅱ) (ATP)2- with Heteroaromatic N-Base Ligands
    WU Fu-liai, SONG Bin, ZHANG Jie, JI Liang-nian
    1994, 10(3):  167-174. 
    Abstract ( )   PDF (2466KB) ( )  
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    o understand the driving forces leading to mixed-ligand complexes in biologi-cal systenis.ternary complexes of M (ATP(L2- type, where M = Cu2+, Ni2+) or Co2+, and L= pyridine(Py), 4-picoline, 3, 5-lutidine, isoquinoline (lq) or benzimi-dazole(Bi) in aqueous solution were studied by spectropliotometry, some of them(M=Cu2+), L = isoquinoline or benzimidazole) were also separately studied hy po-tentiometric pHtitration.The results show that an intramolecular stacking interac-tion exists between the heteroaromatic ring of the ligands and the purine moiety of ATP.
    Studies on the Reaction Between α-Acetylthioformanilide and o-Phenylenediamine
    ZOU Jian-ping, ZHEN Ren-sheng, ZHAO Bei, FANG Dong, LU Zhong-e
    1994, 10(3):  175-178. 
    Abstract ( )   PDF (2232KB) ( )  
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    2,3-Disubstituted quinoxalines were synthesized from α-acetylthioformanilide and ophenylenediamine.Further studies sliowed that there existed competitive re-actions.One was a condensation reaction which produced substituted quinoxaline and the other was a substitution reaction which produced substituted quinoxaline-2-thione.
    Syntheses and Magnetic Properties of Cu(Ⅱ)-RE (Ⅲ) Heterobinuclear Complexeswith N, N′-Bis (3-carboxyisalicylidene)-trimethylenediamine
    TAO Ruo-jie, YU Zliao-wen, ZHOU Xu-ya, JIN Dou-man, LIAO Dai-zheng
    1994, 10(3):  179-184. 
    Abstract ( )   PDF (2377KB) ( )  
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    Nine heterobinuclear complexes of Cu (Ⅱ)-RE (Ⅲ) with N, N′-bis-(3-car-boxylsalicylidene) trimetliylenediamine (TS) were syntliesized and characterized bymeans of elemental analyses, molar conductivity, thermogravimetry,IRand elec-tronic spectra.The measurements of variable-temperature magnetic susceptibilitysliow that there exists only a very weak antiferromagnetic spin exchange interactionbetween the ions of Cut(Ⅱ) and RE(Ⅲ) in CURETSCI·3H2O.
    Studies on the Glycosides in the Leaves of Oplopanax elatus NAKAI(Ⅰ)
    WANG Guang-shu, ZHAO Chun-fang, XU Jing-da, Tetsuya Murayama, Masazumi Miyakoshi, Junzo Shoji
    1994, 10(3):  185-192. 
    Abstract ( )   PDF (275KB) ( )  
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    Four new saponins were isolated from the leaves of Oplopanax elatus Nakai.The structures of the four saponins, tentatively named compounds A(1), B(2), C(3) and D (4) were elucidated to be 28-O-a-L-rhamnopyranosyl (1-4)-β-D-glu-copyranosyl (1-6)-β-D-glucopyranosyl esters of betulinic acid 3-O-β-D-glucopyra-noside (1) .oleanolic acid 3-O-β-D-glucopyranoside (2), 3a, 23-dihydroxyolean-12-ene-28-Oic acid (= 3-epi-hederagenin) (3), 3β-hydroxyolean-12-ene-23-al-28-oic acid (=gypsogenin) (4), respetively.
    Blue Luminescent Properties of EnzymaticCatalyzed Polymerized p-Phenyl Phenol
    MA Yu-guang, SHEN Jia-cong, TANG Jian-guo, LIU Shi-yong, MA Lin
    1994, 10(3):  193-196. 
    Abstract ( )   PDF (2245KB) ( )  
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    Photon emission properties of polyphenylphenol (PPP) synthesized in the pres-ence of a newly-found enzymatic catalyst are reported.The photoluminescence peakexcited by the light at 350 nm is at about 370-420 nm.The absorption band edgesand photon emitting peaks of the polymer were found dependent on the conjugatedlengths of the polymer.In the transient luminescence measurement the lifetime of PLdecay was determined to be 2.0 ns which is supposed as the evidence of polaronexcitation recombination.
    The Effects of Radiation on CrystalTransformations of Poly (vinylidene fluoride)
    ZHAO Zhu-di, YANG Huai, LANG Mei-dong, CHEN Xin-fang
    1994, 10(3):  197-201. 
    Abstract ( )   PDF (2324KB) ( )  
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    This paper covers the effects of γ-radiation on crystal transformations of Poly-(vinylidene fluoride)before and after drawing as well as during annealing process.The results show that the drawing results in a drastic increase in both crystallinityalong the meridian direction and β-form crystal content for the irradiated samples.When the drawn samples were irradiated under appropriate dose and then annealedat 140℃, transformation from β-form to a-form was subjected to an inhibition.The transformation mechanisms between the two types of crystals are discussed onthe basis of results of WAXD and DSC.
    Synthesis and Characterization of ChiralLiquid Crystal CMPPCDP
    TIAN Yan-qing, ZHAO Ying-ying, SU Feng-yu, TANG Xin-yi, ZHAO Xiao-guang, ZHOU En-le
    1994, 10(3):  202-205. 
    Abstract ( )   PDF (284KB) ( )  
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    A novel chiral liquid crystal 4'-(2-chloro-4methylpentanoyloxy) phenyl 2-cyano-3-(4'-n-dodecyloxyphenyl)propenoate (CMPPCDP) was synthesized.The compound was characterized using IR, 1H NNIR, elementary analysis.The liquid crystalline pliasc transition wasstudied using optical polarized micrography and differential scanning calorimetry.
    Neural Network Learning of the Interaction Between Peptide Segments of Proteins
    Lu Zhi-bin, WANG Yu-hing, LI Wei, MA Su-cheng
    1994, 10(3):  206-210. 
    Abstract ( )   PDF (2363KB) ( )  
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    A neural network model based on backbone propagation was applied to Learn-ing and predicting the interaction between antiparallelly interactive peptide seg-ments in proteins.Hydrophobic properties pf residues were found dominant in in-terpeptides.Weights of each kind of residues, obtained by this work,suggestedsome different scales for the hydrophobicity of the residue.These will be helpful in understanding polypeptide structure and protein folding.
    Kinetic Studies on Axial Coordination Reaction ofTetraphenylporphinatocobalt(Ⅱ) Chloride
    XIA Xin, ZHU Zhi-ang, CHEN Yun-ti
    1994, 10(3):  211-219. 
    Abstract ( )   PDF (2556KB) ( )  
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    The axial coordination reactions of tetraphenylporphinatocobalt (Ⅲ) chloride(Co TPPCl) with various imidazoles RIm (HIm .imidazole; Melm, 2-methylimida-zole) were investigated in acetone and dichloromethand solvents at different temper-atures.The reaction mechanisms were proposed and the differences between experi-mental results in the two solvents h ave been interpreted using the proposed mecha-nisms and rate equations for the first time, and the reaction scheme for the axial re-action of the metalloporphyrin has been developed.Hydrogen bonding plays an im-portant role in the reactions.The effects of various imidazoles for these reactionsand the solvents are reported.The comparison between iron and cobalt porphyrinsin the kinetics are discussed.
    The Difference of Electronic Properties and the Effect of Hydrogen-bond of cis-and trans-Polyazomethine
    WANG Rong-shun, PAN Xiu-mei, SU Zhong-min
    1994, 10(3):  220-226. 
    Abstract ( )   PDF (2439KB) ( )  
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    The difference of cis-and trans-polyazoniethines were investigated using SCF-LCAO-MO AMl and CNDO '2-COmethods.Energy band structures and charge distribution of different isomers were obtained.The formation of C-H …N hydro-gen-bonds in the polymers and different contribution to cis-, trans-isomer stability have been systeniatically analysed in theory.The difference of electronic propcrties before and after the formation of hydrogen-bond were intensively studied.
    Synthesis, X-ray Structure and Spectral Propertiesof a Tetra-component Heteropoly Compound
    ZHANG Heng-bin, YANG Guang-di, QI Xing-yi, LI Shu-jia, XU Shan-peng
    1994, 10(3):  227-235. 
    Abstract ( )   PDF (526KB) ( )  
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    The single crystal of a tetra-component heteropoly compound Mo2Co3O68(H2O2)2 ] [MoO6]·15(H2O) was obtained in an aqueous solution with Na2MoO4, Na2WO4, Co (NO3)2 and H3PO4 as starting materials.The erystallo-graphic data determined by means of X-ray diffraction analysis are: triclinic sys-tem,space group Pl ,Z= 2:a =1.9227(9) nm,b=1.9359(7)nm, c=1.2565(3)nm .a = 91.43 (3), The Differential thermal and thermogravimetric analysis indicated the thermal stbility of the compound and its spectral properties were characterized by IR and XPS measurements .
    Synthesis and Structure of Ion-pairComplex [Mo(dtc)4][Sm(dtc)4]
    SUN Chun-ting, ZHU Ya-bin, LIU Xiao-xun, YI Shuzhen, LI Li, ZHENG Xiao-feng, WANG Yue
    1994, 10(3):  236-239. 
    Abstract ( )   PDF (2240KB) ( )  
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    Tetra (N, N-diethyldithiocarbamates) Samarium (Ⅲ)tetra (N, N-di-ethyldithiocarbamates)Molybdenum (V)([Mo(dtc)4][Sm(dtc)4])was synthesizedby the reaction of [Mo(dtc)4]Cl and Na[Sm(dtc)4] in miethanol.The crystal struc-ture was determined using X-ray diffraction methods.The compound crystallizes inthe triclinic space group P1 with the lattice parameters: a =1.1557(4) nm, b=1.5253(3) nm, c=1.8670 (6) nm and a=97.001 (20)°, β=94.506(24)°, γ=93.419(20)°,Z=2.The final R=0.059.The spectroscopic and XPSstudies werecarried out.
    Studies of Laser-induced-MOCVDZinc Oxide Films
    REN Peng-cheng, TAN Zhong-ke, LUO Wen-xiu
    1994, 10(3):  240-243. 
    Abstract ( )   PDF (292KB) ( )  
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    Thin films of ZnO were prepared using the double photobeams ultraviolet laserinduced-metallorganic chemical vapour deposition (MOCVD)technique.The struc-ture and transparent photoconductive properties of these films were investigated us-ing X-ray diffraction (XRD), reflecting electron diffraction (RED) .scanning elec-tron microscopy (SEM) and ultraviolet visible absorption spectrometry (UV) .Theexperiments showed that the technique produced superior quality films of polycrys-tal ZnO1-x (the O-vacancies in the ZnO lattice), and possessed higher depositionrate, lower growth temperature conipared with CVDor MOCVD technique and thethin films had far better transparent photoconductive properties than tliose grownby the conventional CVDor MOCVD technique.
    The Adsorption Behavior of Lithium Cationon Polyacene and Its Influenceon Conductive Property
    SU Zhong-min, WANG Rong-shun, JIANG Xiao-dong, SHI Zhong-liang, XIE De-min
    1994, 10(3):  244-249. 
    Abstract ( )   PDF (2356KB) ( )  
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    The adsorption beliavior of lithium cation (Li+) on the surface of polyacenesemiconductor (PAS) molecule was investigated using quantum chemistry MNDO and CNDO/2 methods.There are two stable adsorption sites of Li+ over C=C bond and benzene ring center of PAS.In the second site, adsorption energy is larg-er.Lithium adsorbed at other sites can easily migrate towards the two sites.Thecalculation of EHMO-CO energy band structures indicated that after lithium wasadsorbed at other different sites on the surface of PAS, the energy gap of the sys-tem had a little increase in most cases, but when Li+ was adsorbed at the hole site ,the energy gap had a little decrease, which is in favor of furtlier improvement ofconductive property.As an electrode material, the hole site may be the best site of Li+ being adsorbed and desorbed.
    Etherification of Methanol with Propylene Oxide Catalyzed by Heteropolyacids
    ZHAO Ben-liang, XU Gui-ying, LI Bin, LIU Jing-fu
    1994, 10(3):  250-251. 
    Abstract ( )   PDF (2158KB) ( )  
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    FT-Raman Spectra Studies on Open Ferrocene
    WANG Yue, JIANG Shi-mei, FAN Yu-guo, SUN Chun-ting
    1994, 10(3):  252-253. 
    Abstract ( )   PDF (2142KB) ( )  
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    Synthesis and Crystal Structure of Bis(tetra-hydrofurfurylcyclopentadienyl) ytterbium Chloride
    ZHUANG Xiu-li, ZHANG Suo-bo, HU Ning-hai, CHEN Wen-qi
    1994, 10(3):  254-255. 
    Abstract ( )   PDF (2148KB) ( )  
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    Mechanisms of Excitation Transfer in Bilayer Vesicles Containing Schiff Base Moiety Adsorbed Dye Anions
    MA Dong-sheng, WU Li-xin
    1994, 10(3):  256-258. 
    Abstract ( )   PDF (2218KB) ( )  
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    Investigation of the Column Function in Gradient Column
    YUN Xi-qin, KOU Deng-min, DENG Yi, LU Xuan-yu
    1994, 10(3):  259-262. 
    Abstract ( )   PDF (2256KB) ( )  
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    Studies on Chemical Constituents of L. Erythrorhizon
    BAI Guang, JIN Xiang-jun
    1994, 10(3):  263-265. 
    Abstract ( )   PDF (2197KB) ( )  
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    Syntheses of 3-Methyl-1-propyl-4-piperidoneand-1-Methyl-3,7-dipropyl-3,7-diazabicyclo[3,3,1]nonan-9-one
    WANG Yu-huan, WANG Guo-jia, ZHANG Wei-ge, DU BO, FANG BO-yan, YU Gui, CHENG Yue-mei
    1994, 10(3):  266-271. 
    Abstract ( )   PDF (2435KB) ( )  
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Jihong YU
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CN 22-1183/O6
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