中国化学快报

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NONTEMPLATE SYNTHESIS OF TWO N₂O₂S MACROCYCLES DERIVED FROM THIOPHENE,AND Hg(Ⅱ), Pb(Ⅱ), Cd(Ⅱ) COMPLEXES

Ling ZHAO, Fu Xin XIE, Zhi Qiang XU, Guang YANG, Shi Sheng NI

中国化学快报. 1994, 5(08): 643-644.

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Two new 19-and 20-member macrocycles containing nitrogen,oxygen and sulfur heteroatoms were synthesized by the nontemplate method starting from thiophene and α, ω-dialkylamine under high-dilution conditions.Hg(Ⅱ), Pb(Ⅱ) and Cd(Ⅱ) complexes of L¹ were also prepared.

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A CONVENIENT SYNTHESIS OF β-CYCLODEXTRIN 2-AND 3-O-MONOBENZOATE

Ai You HAO, Lin Hui TONG, Fu Sheng ZHANG, Dao Sen JIN

中国化学快报. 1994, 5(08): 645-646.

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β-CD 2-O-and 3-O-monobenzoate were synthesised by direct benzoylation of β-CD with benzoyl chloride in alkaline aqueous solution.

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SYNTHETIC BILAYER MEMBRANES FROM A SERIES OF MONOALKYL AZOTIC CROWN ETHERS

Xiang Ping QIAN, Lin WU, Chun Sheng ZHU, Zi Hou TAI

中国化学快报. 1994, 5(08): 647-650.

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A new series of amphiphiles of monoalkyl azotic crown ethers has been synthesized.TEM,DSC and UV-Vis spectroscopy of aqueous dispersions of these amphiphiles indicate that they can form self-assembly of bilayer membranes when dispersed in water.

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SYNTHESIS AND ANTI-LIPID PEROXIDATION ACTIVITY OF AMINO ACID DERIVATIVES OF EBSELEN

Yiag Xia XIAO, Xiu Fang LIU, Han Sheng XU, Shi Yong SUN, Bo XU

中国化学快报. 1994, 5(08): 651-654.

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Three Ebselen derivatives (Ⅲ_1-3) were designed and synthesized with amino acid attached to the p-position of 2-phonyl moiety.Effect of compound Ⅱ,Ⅲ₁,Ⅲ₂,Ⅲ₂,as well as Ebselen on the Fe³⁺/cysteine-induced rat microsomal lipid peroxidation were investigated.And their IC₅₀ were 30,17.7,22.7,22.2 and 24 μmol/L respectively.

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STUDY ON THE SYNTHESIS, RING-OPENING REACTION AND GLYCOSIDATION OF 1,6-ANHYDRO-2,4-DI-O-BENZYL-β-D-GLUCOPYRANOSE

Hong LIANG, Chang Pei FEI

中国化学快报. 1994, 5(08): 655-658.

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A series of compounds had been synthesised from 1.6-anhydro-2,4-di-O-benzyl-β-D-glucopyranose with good yields.The effects of C-3 protecting groups on ring-opening reaction and the glycosidation of α-D-glucopyranosyl bromides were studied.

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THE REARRANGEMENT REACTION of 3-ALKYLPHTHALIDES

Su Hua PANG, Xiao Tian LIANG, Zong Ru GUO, Guang Zhong YANG

中国化学快报. 1994, 5(08): 659-662.

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The rearrangement of 3-butylphthalide and its two homologues to 5-carboxyl-1-alkyltetrahydronaphthalene by 1,4-hydride transfer and 3-propylphthalide to 4-carboxyl-1-alkylindane by 1,3-hydride transfer in the presence of AlCl₃ were observed and the possible mechanism was discussed.

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SOME INTERESTING REACTIONS OF AN N-BROMOMETHYL QUATERNARY AMMONIUM SALT WITH HALOPHILIC REAGENTS

Guo Feng HUANG, Xiao Tian LIANG

中国化学快报. 1994, 5(08): 663-666.

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N-Bromomethyl-N-methyl-1,2,3,4-tetrahydro-iso-quinolinium bromide(1) reacted with sodium 2,6-di-tert-butylphenoxide to afford compound 2a,3a,4 and 5 via the benzylic N-ylide intermediate.Meanwhile,when compound 1 reacted with tri-n-butylphosphine,the coupling compound 7 was obtained via demethylation reaction.The reaction mechanisms were discussed.

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THE ENVIRONMENTAL EFFECT ON THE STABILITY OF LASER-SENSITIZING CYANINE DYES

Ping CHEN, Hui-Ping ZHANG, Hong MA, De Shui ZHENG, Tsuneki OKAZAKI, Masaaki HAYAMI

中国化学快报. 1994, 5(08): 667-670.

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Eight of three different kinds of long absorption wavelength dyes with typical structures have been chosen for studying the relation between structure and stability.The three kinds of dyes are quinocyanine.naphthothiacarbocyanine and carbocyanines.The environmental effect,such as light,oxygen and water,has been investigated.Results show that quinocyanine dyes prefer to hydrolytic reaction,while naphthothiacarbocyanine dyes tend to oxidizing reaction and photo-oxidation reaction process in singlet oxygen mechanism.

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A NEW N-FORMYL C₁₉-DITERPENOID ALKALOID, ALDOHYPACONITINE, FROM CULTIVATED ACONITUM CARMICHAELI, DEBX

Xian Kai WANG, Tong Fang ZHAO, Sheng LAI

中国化学快报. 1994, 5(08): 671-672.

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Chemical investigation of O-Zhang-Ye fuzi,cultivated Aconitum carmichaeli Debx.,from Zhong-Ba,Sichuan,resulted in the isolation of a new alkaloid,aldohypaconitine (1),along with the known alkaloids:hypaconitine (2),mesaconitine,aconitine,neoline,fuziline,songorine,and songoramine.Songoramine has not been reported previously in this plant.The structure of 1 has been established on the basis of spectral methods,and confirmed by chemical correlation with hypaconitine (2).

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THE CHEMICAL STRUCTURE OF CAOHUOSIDE B

Wen Kui LI, Pei Gen XIAO, Ru YI ZHANG

中国化学快报. 1994, 5(08): 673-674.

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A new flavonol glycoside,caohuoside 5 was isolated from the aerial parts of Epimedium koreanum.Its structure was determined by spectroscopic methods(FAEMS,EIMS,¹E NMR,¹E-¹H COSY,¹H-¹H TCCSY,¹³C NMR,APT,¹H-¹³C CCSY and ¹H-¹³C long range COSY) and chemical evidences.

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STRUCTURAL ELUCIDATION AND SYNTHESIS OF ASTERBATANOSIDE A FROM ASTER BATANFENSIS

Yu SHAO, Yun Long LI, Bing Nan ZHOU

中国化学快报. 1994, 5(08): 675-678.

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A new p-acetytphenyl glycoside,asterbatanoside A has been isolated from the roots of Aster batangensis,and its structure has been elucidated as p-hydroxyacetophenone-O-β-D-xylopyranosyl-(1-6)-β-D-glucopyranoside by chemical and spectral means.For the confirmation of this structure,the synthesis of this compound was also reported in this paper.

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β-CORRECTION SPECTROPHOTOMETRIC DETERMINATION OF ALUMINIUM, USING THE AL(Ⅲ)-PF-OP REACTION

Hong Wen GAO, Feng ZOU, Peng Fei ZHANG

中国化学快报. 1994, 5(08): 679-680.

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Aluminium has been determined by β-correction spectrophotometry with phenylfluorone (PF)and a non-ionic surfactant,emulsifying OP in pH 8 ammoniacal buffer solution.β-correction spectrophotometric method can eliminate completely the effect of excess PF to increase the analytical sensitivity and decrease error.The results have shown that Beer's law was obeyed over the concentration range 0-15 μg Al(Ⅲ)/25 ml and the relative standard deviation was less than 3.3%.

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EXTRACTION AND PRECONCENTRATION OF SCANDIUM FROM AQUEOUS SOLUTION BY ELECTROSTATIC PSEUDO LIQUID MEMBRANE

Xiao Jin YANG, Zhong Mao GU, Shu Yu BAI, De Xi WANG

中国化学快报. 1994, 5(08): 681-684.

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Electrostatic Pseudo Liquid Membrane (ESPLIM),developed in this laboratory,is a novel chemical separation technique.In this paper,a study has been conducted on extraction and preconcentration of scandium from dilute aqueous solution by ESPLIM.The effects were studied on the scandium extraction of the extractant,applied field,the pH value of feed and scandium concentration in the feed.The extraction efficiency of scandium from feed containing 25-100 mg/L of scandium was more than 99%.and scandium was concentrated from 21.64 mg/L in the feed to 2474 mg/L in the concentrate,giving a concentration factor of 114.The experimental results demonstrated that the concentration of scandium in the organic phase was much lower than its equilibrium concentration in the solvent extraction,which confirms the nonequilibrium feature of the ESPLIM process.ESPLIM seems to be a very convenient,effective and economic method for extracting and preconcentrating scandium.

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THE PROMOTING EFFECT OF FLUORIDE TO OCM OCTALYST ZrO₂-BaF₂

Zi Sheng CHAO, Xiao Ping ZHOU, Shui Ju WANG, Fu Chun Xu, Hui Lin WAN, K. R. TSAI

中国化学快报. 1994, 5(08): 685-686.

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A number of researcher have found that the catalytic properties of metal oxides can be promoted by adding of halides, especially metal chlorides and bromides[1-3]. But the utilizing of fluorides, which should be more stable than the corresponding chlorides and bromides under the conditions of OCM reaction, has not been reported. In this paper the promoting effect of fluoride on OCM reaction was studied.

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IN SITU FT-IR OF SiO₂-SUPPORTED Pt-Mo HETEROBINUCLEAR METAL CARBONYL HYDRIDE CATALYST FOR CO HYDROGENATION

Chang Ping SHAO, Hai You WANG, Jin Lai xu

中国化学快报. 1994, 5(08): 687-688.

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In situ FT-IR of SiO₂-supported(PPh₃)HPt(μ-PPh₂)(μ-CO)Mo(CO)₄heterobiuclear hydrido carbonyl catalyst in tbe CO hydrogenation condition has been investigated.

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FACTORS AFFECTING THE CATALYTIC ACTIVTTIES OF THE C_p2TiCl₂/n-BuLi SYSTEM FOR THE OLEFIN HYDROGENATION

Shi Jian LIAO, Yun XU, Yi Ping ZHANG, Qi SUN, Ren An SUN, Ren WU YANG

中国化学快报. 1994, 5(08): 689-692.

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The catalyst system,C_P2TiCl₂/n-BuLi,exhibits very high activity for the hydrogenation of 1-octene with a maximum turnover frequency of 71 sec^-1.Factors which strongly affect the activities of this catalyst system have been discussed.

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STEREOSTRUCTURE OF POLY[4-(2-METHYLPROPENOYLOXY)-4'-CYANOBIPHENYL] BY PHOTOPOLYMERIZATION UNDER AN EXTERNAL ELECTRIC FIELD

Chong Wu LI, Ang PAN

中国化学快报. 1994, 5(08): 693-694.

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Studies of the photopolymerization of mesogenic monomer[4-(2-methylpropenoyloxy)-4'-cyanobiphenyl](CBK-M) under the action of a DC electric field have been performed.The influence of the applied voltage on the srereostructure of the polymers obtained was observed.It is explained to be due to the interaction of cyanobiphenyl mesogenic groups with the electric field.

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THE STUDY OF ESR SPECTRA IN SOLID STATR AND HIGH VISCOSITY SOLUTION FOR PROPAGATING RADICAL OF POLYSTYRRNE

You Gang MAO, Rui Fang SONG, Jia Cong SHEN

中国化学快报. 1994, 5(08): 695-696.

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In this paper,The 3-line in solid and 12-line high-viscosity solution ESR spectra of the propagating radical of Polystyrene were studied.The 3-line spectrum comes from the conformation of the radical R1 which usually corresponds to a 6-line typical spectrum but appear as an apparent 3-line spectrum in solid state.The 12-line spectrum comes from two species of radicals with the same confomation R2 but different G factor.R2 corresponds to a 8-line typical spectrum which appear as an apparent 6-line spectrum in the high-viscosity solution.Therefore,two apparent 6-line spectra of R2 with different g values form the 12-line spectrum.

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FERROMAGNETIC INTERACTION BETWEEN GADOLINIUM(Ⅲ) AND COPPER (Ⅱ)IONS IN N,N'-BIS(2-AMINOPROPYL)OXAMIDO COPPER(Ⅱ) BRIDGED BINUCLEAR Gd(Ⅲ)-Cu(Ⅱ) COMPLEX

Yan Tuan LI, Dai Zheng LIAO, Zong Hui JIANG, Shi Ping YAN, Geng Lin WANG

中国化学快报. 1994, 5(08): 697-700.

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The heterobinuclear complex of formula Cu(oxap)Gd(phen)₂(ClO₄)₃ has been synthesized,where oxap denotes the N,N'-bis (2-aminopropyl) oxamido dianion and phen represents 1,10-phenanthroline.The complex was characterized with ESR and variable temperature magnetic susceptibility (4-300K).The least-squares fit of the experimental susceptibilities yielded J=2.25cm^-1.The observed Gd(Ⅲ)-Cu(Ⅱ) coupling is ferromagnetic.One plausible mechanism that can cause a ferromagnetic coupling between Gd(Ⅲ) and Cu (Ⅱ) is discussed in terms of spin-polarization.

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XPS STUDIES OF LITHIUM ION CONDUCTING OXYSULFIDE GLASSES

Hai Chun GAO, Chang Min SUN, Yan HUO, Rui Feng ZHANG

中国化学快报. 1994, 5(08): 701-702.

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The results of the photoelectron spectra for the oxysulfide glasses in the Li₂S-B₂O₃(-LiBr) systems are discussed.The peak resolved S2p spectra show the existences of bridging and non-bridging S.The values of the binding energy of Lils indicate the chemical environmemts of Li⁺ ions.

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THE GEOMETRY AND ORBITAL INTERACTION OF TRIATOMIC CLUSTERS FOR Cu,Ag,Au(Ⅱ)

Han Xing LIU

中国化学快报. 1994, 5(08): 703-706.

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In the previous paper,the geometry of the triatomic clusters for Cu,Ag,and Au was obtained using the DV-Xα method.In this investigation the atomic orbital interactions of atom Cu,Ag,Au in the triatomic clusters are analyzed.The magnitudes of the atomic orbital interactions of the atoms in the clusters are measured by the splitting of corresponding atomic orbital.The calculation results show the atomic orbital interactions of Cu triatomic cluster differ greatly from those of Ag and Au triatomic cluster because of the mixture radio of 4s-orbital with 3d-orbital in the Cu cluster more than those in the Ag and Au cluster.The values of atomic orbital interactions of Au in the cluster are larger than corresponding atomic orbital interactions of Ag in the cluster.

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STUDIES OF THE LATTICE DAMAGE CAUSED BY ION IMPLANTATION INTO Al_xGa_1-xAS/GaAs

Bao An GONG, Xiao Li HAN, Dai Qing LI, Ting Qi REN, Ya WAN

中国化学快报. 1994, 5(08): 707-710.

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The lattice damage produced in GaAs and Al_0.3Ga_0.7As/GaAs superlattices by 1 MeV Si⁺ irradiation at room temperature and elevated temperature was investigated by using Rutherford backscattering/channeling (RBS/C) technique and the results of the damage accumulation observed in the experiment are explained by the relative bond strength obtained from molecular-orbital calculation of a group of atomic cluster simulated GaAs and Al_xGa_1-xAs/GaAs.

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SYNTHESIS AND STRUCTURE OF A 2D SHEET-LIKE COPPER(Ⅱ) COMPLEX WITH BRIDGING PYRIDINE-4-CARBOXYLATE AND TRANS-OXAMIDATE LIGANDS

Mei Fang Wu, Zhong Ning CHAN, Jun QIU, Wen Xia TANG, Zhe Ming WANG, Shi Xiong LIU, Jin Ling HUANG

中国化学快报. 1994, 5(08): 711-712.

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A complex polymer[Cu₂(oxen)(pic)(H₂O)]_N(ClO₄)·ZnH₂O,where oxen and pic are N,N'-bis(2-aminoethyl)oxamide and pyridine-4-carboxylate,respectively,was synthesized.It crystallizes in the monoclinic space group P2₁/c,with a=10.420(2) Å,b=13.118(2) Å,c=14.863(5) Å,β=93.05(2)°,and z=4.The structure of this complex consists of 2D network of copper(Ⅱ) ions bridged by bis-tridentate oxen in trans-conformation,and by pyridine-4-carboxylate in which the pyridine ring acts as a monodentate group whereas the carboxylate as a tridentate group and bonds to three different copper centres in a novel fashion.The repeating asymmetric unit is a binuclear copper(Ⅱ) fragment with one of the copper centre locating in a lengthening octahedral environment,whereas the other in a distorted tetragonal pyramid geometry.

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CRYSTAL STRUCTURE OF A 2D SHEET-LIKE μ-CYANIDO-OXAMIDATO BRIDGED Fe(Ⅲ)-Cu(Ⅱ) HETERNUCLEAR COMPLEX

Mei Fang Wu, Zhong Ning CHEN, Jun QIU, Wen Xia TANG, Jing Ling WANG, Fang Ming NIAO

中国化学快报. 1994, 5(08): 713-714.

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The synthesis and crystal structure are reported for the sheet-like compound[CU₂(oxpn)Fe(CN)₅(NO)]_■,where oxpn is the dianion of N,N'-bis(3-aminopropyl)oxamide.This compound crystallizes in the orthogonal space group Pnma,with a=11.413(4),b=22.242(5),c=7.736(2) Å,and Z=4.The structure was refined to conventional discrepancy factors R=0.047 and Rw=0.054.The Cu(Ⅱ) and Fe(Ⅲ)centors are bridged by oxpn and cyanide,the former behaves as a bis-terdentate ligand bound to copper(Ⅱ) ion to form copper(Ⅱ) dimers,whereas the latter bridges Cu(Ⅱ) and Fe(Ⅲ) centers in both symmetric and asymetric end-to-end bis-monodentate fashions,spreading out along be plane to form a 2D network.The structure is made up of CuFe unit with Cu(Ⅱ) and Fe(Ⅲ) ions locating in a distorted square-based pynamic and a compressed octahedron,respectively.

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STRUCTURE CHARACTERIZATION OF Ru₃(CO)₁₂ IN NaY ZEOLITE BY INFRARED SPECTROSCOPY

An Ming LIU, Lin HUANG, Yi De XU, Takafumi SHIDO, Masaru ICHKIAWA

中国化学快报. 1994, 5(08): 715-716.

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Ru₃(CO)₁₂ entrapped within NaY zeolite cages was prepared by monolayer dispersion technique,which can be reversibiy decarbonylated and recarbonyiated.

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SYNTHESIS AND CHARACTERIZATION OF Pt-M(M=Cr,Mo,W) HETEROBINUCLEAR METAL HYDRIDO CARBONY COMPOUNDS

Chang Ping SHAO, Jie Yu WANG, He Fu GUO

中国化学快报. 1994, 5(08): 717-718.

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The early-late transition metal heterobinuclear Pt-M(M=Cr,Mo,W)hydrido carbonyl compounds were synthesized and characterized by IR and NMR spectroscopic means.

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A NEW PEROXYNIOBIUM-CONTAINING POLYOXOANION, P₂W₁₇(NbO₂)O₆₁^7- SYNTHESIS AND CHARACTERIZATION OF STRUCTURE

Lun Yu QU, Jin Bo FANG, Jian GONG, Biao CHEN

中国化学快报. 1994, 5(08): 719-720.

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The synthesis and characterization of the previously unknown P₂W₁₇(NbO₂)O₆₁^7-,a new composition containing one Nb^vO₂ peroxide group,was described,O₂^2- of the molecule was detected by I^-/S₂O₃^2- titration.the structure of the anion prepared was characterized by elementel analysis,IR,UV and ³¹P-NMR spectra.

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1994年, 第5卷, 第08期　刊出日期：1994-08-20

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1994年, 第5卷, 第08期 刊出日期：1994-08-20

1994年, 第5卷, 第08期　刊出日期：1994-08-20