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Table of Content
24 January 1998, Volume 14 Issue 1
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Articles
Synthesis, Characterization and Catalytic Activity of Polyoxometalates Derived from α-P
2
W
15
O
56
12-
MENG Lu, LIU Jing-fu
1998, 14(1): 1-5.
Abstract
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Six new polyoxometalates a-K
a
H
b
P
2
W
15
M
3
O
62
·nH
2
O(a+b=12, M= Ti, Zr) and K
c
H
d
P
4
·W
30
M
4
O
112
·mH
2
O(c+d=20; M=Al, Ga, In, Fe) were synthesized from the lacunary precursor Na
12
[a-P
2
W
15
O
56
]·24H
2
O and characterized by means of elemental analysis, IR spectra,
183
W NMR spectra and electrochemical methods.
Synthesis and Characterization of Tri(organotin) Substituted Heteropolytungstates
YANG Qi-hua, DAI Hui-tong, LIU Jing-fu
1998, 14(1): 6-11.
Abstract
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Tri(organotin) substituted tungstosilicates α, β-[(RSn)
3
SiW
9
O
37
]
7-
(R=Ph or Bu) were prepared by the reaction of organotin trichlorides with a, α, β-SiW
9
and isolated as its Bu
4
N and Me
4
N salts.
Synthesis, Characterization and DNA-Binding Studies of Nickel(Ⅱ) Mixed-Polypyridyl Complex
JIN Lan, YANG Pin
1998, 14(1): 12-16.
Abstract
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The complex of Ni(phen)
2
dppz
2+
(where dppz is the planar ligand dipyrido [3, 2-a: 2', 3'-c]phenazine) was synthesized.
The Electrochemistry of Cytochrome c at a Viologen-thiol Self-Assembled Monolayer
LI Jing-bong, CHENG Guang-jin, DONG Shao-jun
1998, 14(1): 17-24.
Abstract
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At the self-assembled monolayer(SAM) of a thiol-functionalized viologen modified gold electrode, cytochrome c(cyt c) exhibits a quasi-reversible electrochemical reaction.
Spectrophotometric Determination of Iron(Ⅱ) Diphosphine Carbonyl Compounds Using Charge-transfer Ban
LI Song-lan, ZHANG Bao-shen, WANG Zhi-hong
1998, 14(1): 25-29.
Abstract
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)
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The UV-Vis spectra of six iron(Ⅱ) diphosphine carbonyl compounds were studied and their charge-transfer bands were assigned.
A Scope Study of Condensation of 1, 3-Diketones with Diethyl Acetonedicarboxylate
ZHONG Zhen-qi, TANG Hui-tong, ZHANG Pang
1998, 14(1): 30-37.
Abstract
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The condensation of each of twenty five 1, 3-diketones with diethyl acetonedicarboxylate was shown to be affected strongly by steric effect. Potassium carbonate better condensing agent than conventionally used sodium ethoxide. was shown to be a somewhat Unsubstituted 1 and 3-substituted acetylacetones can be brought into condensation with diethyl, 3-diketones acetonedicar-boxylate from very low to high yields whilst 3, 3-disubstituted acetylacetones are devoid of reaction except scission.
Studies on Ester Exchange Reaction
ZHANG Jing-wen, ZHANG Xiao-long, MA Xiu-li, LIU Chang-cheng, MU Ying, SUN Yun-xiu, JIANG Wen-pu, HUANG Hua-min, LI Yao-xian, PENG Wan-ru
1998, 14(1): 38-41.
Abstract
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)
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The ester exchange reactions of saturated aliphatic acid esters, unsaturated aliphatic acid esters and aromatic carboxlic acid esters with various alcohols catalyzed by ferric sulfate hydrate show that this catalyst is efficient and the yields are higher than those catalyzed by usual catalyst such as sulfuric acid.
A Conformational Study on the Interaction of Saporin-S6 with Phospholipid Vesicles
HAO Qiang, GUAN Zhong-hui, YAN Li, ZHANG Yan, YAN Gang-lin, LIU Guo-bong, DONG Qing-chu, LI Qing-shan, WANG Yan-zhong
1998, 14(1): 42-45.
Abstract
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Saporin-S6(SO-6) is a ribosome-inactivating protein purified from the seeds of. saponaria of-ficinalis. The conformation of the SO-6 molecule was studied by means of circular dichroism(CD) and fluorescence spectroscopy. The protein is stable in the range of pH 3-9.
Research on the Conditions of Enzymatic Saccharification for Sugarcane Bagasse
ZHENG Cheng, Kanji Matsumoto
1998, 14(1): 46-52.
Abstract
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)
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Direct heat to explosion sugarcane bagasse and the enzyme of Onozuk RS cellulase (from Yakult, Japan) were used in the experiments. A series of enzymatic hydrolysis conditions, such as enzyme concentration, temperature, pH, hydrolysis time, different kinds of buffers, ion strength and the ratio of substrate to liquid was studied.
Electrochemical and Spectroelectrochemical Studies of Molybdenum and Neodymium Complex with Diethyld
YU Zhen-xing, FU Qing-hong, ZHANG Heng-bin, NIU Shu-yun, LI Shu-jia, Xun Xiu-mei
1998, 14(1): 53-58.
Abstract
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)
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The eight-coordination complex, [ Mo(dtc)
4
][Nd(dtc)
4
], formed by N, N-di-ethyldithiocarbamate (dtc) with the transition element molybdenum and the rare-earth element neodymium was characterized by means of conductance, cyclic voltammetry and UV-visible ab-sorption spectra.
INDO Studies on the Electronic Structure of (2, 4-C
7
H
11
)
2
Yb（DME）
FENG Jian-nan, WANG Zhi-thong, ZHANG So-bo, LIU Ju-zheng
1998, 14(1): 59-64.
Abstract
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)
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The electronic structure of (2, 4-C
7
H
11
)
2
Yb(DME) (DME=CH
3
OCH
2
CH
2
OCH
3
) was studied by means of the semiempirical LCAO calculation of INDO. The calculational results show that the f-electrons do not directly participate in forming chemical bonds. The 5d-electrons of metal ytter-bium play a major role. Furthermore, we have investigated the molecular geometries and ytter-bium-ligand orbital character.
Thermokinetic Oscillation of a Two-step Reacting System Coupled with Thermal Conduction and Apparent Uncertainty in the Phenomenological Kinetic Measure of Unimolecular Reactions
CHEN Xiao-nan, LUO Jiu-li
1998, 14(1): 65-69.
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A nonisothermal two-step mechanism for a unimolecular reaction coupled with thermal conduction is suggested in this paper. The stability of the relevant thermokinetic steady states was investigated by means of linear stability analysis.
Novel Highly Branched Polyester Nanoparticles(I)──Light-Scattering Characterization
MA Rong-Jiu, WU Qi(Chi)
1998, 14(1): 70-75.
Abstract
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)
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Highly branched polyester nanoparticles (HBPN) with a weight-averaged molecular weight of 1.2 × 10
4
g/mol and a hydrodynamic radius of 4. 3nm were prepared by the polycondensation of phthalic anhydride and pentaerythritol at 142℃ under vacuum.
Novel Highly Branched Polyester Nanoparticles(Ⅱ)──Interactions Between Anionic HBPNP articles and Cationic Surfactant, Cetyltrimethylammonium Bromide
MA Rong-Jiu, WU Qi(Chi)
1998, 14(1): 76-80.
Abstract
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)
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The interactions between highly-branched anionic polyester nanoparticles (HBPN) and the oppositely charged surfactant (cetyltrimethylammonium bromide, CTAB) in a buffer (pH=12) were investigated by means of dynamic laser light scattering.
Synthesis and Characterization of the Side Chain Liquid Crystalline Poly(monoester{6-[4-(p-nitrophenyl)azo]phenoxy-1-hexyloxy} of Malefic Anhydride)
XING Pei-xiang, WANG Da-yang, TIAN Yan-qing, LIU Zhi-qiang, ZHAO Ying-yingt, TANG Xin-yifi, JIANG Bing-zheng
1998, 14(1): 81-86.
Abstract
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The poly(monoester {6-[4-(y-nitrophenyl)azo]phenoxy-l-hexyloxy} of malefic anhydride) shows a smectic phase with a focal conic fan texture. With the decrease of the monoestering degree the phase transition temperature decreases and the mesomorphic temperature range becomes narrow.
Electochemistry and Electrocatalysis Investigation of the Tungstopalladate Heteropolyanion Modified Electrode
XIE Yan, SUN Wen-Bang, LIU Hui-zhang, KONG Ji-lie, XIE Gao-yang, DENG Jia-qi
1998, 14(1): 87-89.
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Electrochemical Oxidation of Hydrazines at a 4-Pyridyl Hydroquinone Modified Electrode
NIU Li, YOU Tian-yan, John Y. Gui, DONG Shao-jun, WANG Er-kang
1998, 14(1): 90-92.
Abstract
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)
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Preparation of Homocitrate using a Modified Method
LI Zeng-chun, XU Ji-qing
1998, 14(1): 93-95.
Abstract
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Review
Electrocatalysis of NADH Oxidation with 3, 4-Dihydroxybenzoic Acid Covalently Bound to Self-assembled Cysteamine Monolayers on a Gold-electroplated Glassy Carbon Electrode
SUN Jian-jun, FANG Hui-qun, CHEN Hong-yuan
1998, 14(1): 96-100.
Abstract
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Articles
Calix[4]dithiacrown-6 and Its Platinum Complex
CHEN Yuan-yin, ZHOU Yi-sui, TONG Xing-hua, LIU Qiang, ZHONG Zhen-Lin
1998, 14(1): 101-103.
Abstract
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)
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Synthesis and Characterization of Multi-block(β)±butyrolactone(BL)-ethylene Oxide(EO) Copolymer
CHEN Xian-hai, ZHANG Yi-feng, SHEN Zhi-quan
1998, 14(1): 104-109.
Abstract
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)
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(327KB) (
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Editor-in-Chief:
Jihong YU
ISSN 1005-9040
CN 22-1183/O6
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