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Calix[4]dithiacrown-6　and　Its　Platinum　Complex

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Chemical Research in Chinese Universities 1998年第1期14卷 101-103页

作者： chen, yuan-yin Zhou, Yi-sui Tong, Xing-hua Liu, Qiang Zhong, Zhen-lin

Ｃａｌｉｘ［４］ｄｉｔｈｉａｃｒｏｗｎ－６ａｎｄＩｔｓＰｌａｔｉｎｕｍＣｏｍｐｌｅｘＣＨＥＮＹｕａｎ－ｙｉｎ，ＺＨＯＵＹｉ－ｓｕｉ，ＴＯＮＧＸｉｎｇ－ｈｕａ，ＬＩＵＱｉａｎｇ，ＺＨＯＮＧＺｈｅｎ－Ｌｉｎ（Ｄｅｐａｒｔ...

Ｃａｌｉｘ［４］ｄｉｔｈｉａｃｒｏｗｎ－６ａｎｄＩｔｓＰｌａｔｉｎｕｍＣｏｍｐｌｅｘＣＨＥＮＹｕａｎ－ｙｉｎ，ＺＨＯＵＹｉ－ｓｕｉ，ＴＯＮＧＸｉｎｇ－ｈｕａ，ＬＩＵＱｉａｎｇ，ＺＨＯＮＧＺｈｅｎ－Ｌｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，Ｗ...

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Cellulose Beads Modified by Histidine:Preparation and Adsorption Behavior

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Wuhan University Journal of Natural Sciences 1999年第3期4卷 331-334页

作者： He Yong-bing Fu Zhao-lin Meng Ling-zhi chen yuan-yin Wuhan Univ China

Porous cellulose beads modified by histidine (PCBH) were prepared. The adsorption capacity of PCBH for divalent Mg(II), Cu(II), Pb(II) and Hg(II) ions were determined. The effects of the temperature, the initial pH value, the concentration of metal ion and PCBH ligand on the adsorption of Cu(II) Hg (II) were discussed. The adsorption process fitted to Freundlich adsorption isotherms for both metal ions. Adsorption rate constants were also found.

关键词： Key wards cellulose derivative adsorption histidine Cu(II) Hg(II)

Synthesis of Calix[4] dithiacrown PlatinumComplexes and Their Catalytic Behavior in the Hydrosilylation of Olefins with Triethoxysilane

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Wuhan University Journal of Natural Sciences 1999年第3期4卷 350-354页

作者： chen yuan-yin Zhou Yi-sui Zhong Zhen-lin Lu Xue-ran College of Chemistry Wuhan University Wuhan China

5,11,17,23-Tetrakis-1′, 1′-dimethylethyl-25,27-dihydroxy-26,28-1″, 7″, 13″-trioxa-4″, 10″-dithiatridecylcene-calix[4]arene (calix[4]dithiacrown-5) and its O-methylated derivate (dimethylcalix[4]dithiacrown-5) were synthesized fromp-tert-butylcalix[4] arene via 1, 3-lower rim functionalization with chloroethyltosylate, followed by ring-closing condensation with β,β/t'-dimercaptoethyl ether in the presence of sodium ethoxide as a base in reflux ethanol under nitrogen atmosphere, followed by methylation with methyltosylate in the presence of NaH as a base in dioxane. It was found that they can coordinate with platinous chloride and the platinous complexes are efficient catalysts for the hydrosilylation of olefins with triethoxysilane.

关键词： calixarene crown ether thiacrown platinum hydrosilylation

Synthesis and characterization of arsenate antimonic acid AAAc(1 : 1)

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Journal of Central South University of Technology 2005年第Z1期12卷 76-81页

作者： WANG Xue-wen chen Qi-yuan yin Zhou-lan ZHANG Ping-min WANG Yu-wen School of Metallurgical Science and Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China Chemistry Department Jinggangshan Normal College Ji''an 343009 China

The AAAc(1 : 1) was synthesized in water by As2O3 and Sb2O3 with molar ratio of 1 : 1: AAAc(1 : 1)was characterized by Raman, IR, TG/DTG, DSC, XPS and XRD. The results show that there are four peaks to vsof As-OH, As-O-Sb, Sb-OH and Sb-O-Sb in Raman spectra of AAAc(1 : 1) at 100 - 1 000 cm-1. The solution of AAAc(1 : 1) was also titrated with KOH solution. The titration results show that AAAc(1 : 1) is a hexabasic acid with dissociation constants of k1 = 3.62 × 10-2 , k2 = 3.05 × 10-3 , k3 = 6. 43 × 10-6 , k4 = 9. 78 × 10-8 ,k5 = 1.32 × 10-11 , k6 =3.87 × 10-12. AAAc(1 : 1) has a good solubility and stability in water, its solid obtained by free volatilizing water from its solution under air at ambient temperature is amorphous. Chemical and thermal analyture of AsO ( OH )2-OH-Sb ( OH )4-O-Sb ( OH )4-OH-AsO ( OH )2 or As ( OH )3-O-Sb(OH)4-O-Sb(OH)4-O-As(OH)3 (isomerism) through experimental determination and geometry optimization.

关键词： arsenic acid antimonic acid arsenate antimonic acid

Polysiloxane with Pendant Benzo Crown Ether via a Spacer of Undecyloxymethyl as Stationary Phase for Capillary Chromatography

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Chemical Research in Chinese Universities 1994年第2期10卷 163-166页

作者： LU Xue-ran ZHANG Li-feng ZHOU Xi-chun WU Cai-ying and chen yuan-yin(Department of Chemistry, Wuhan University, Wuhan, 430072)

ＰｏｌｙｓｉｌｏｘａｎｅｗｉｔｈＰｅｎｄａｎｔＢｅｎｚｏＣｒｏｗｎＥｔｈｅｒｖｉａａＳｐａｃｅｒｏｆＵｎｄｅｃｙｌｏｘｙｍｅｔｈｙｌａｓＳｔａｔｉｏｎａｒｙＰｈａｓｅｆｏｒＣａｐｉｌｌａｒｙＣｈｒｏｍａｔｏｇｒａｐｈ... 详细信息

ＰｏｌｙｓｉｌｏｘａｎｅｗｉｔｈＰｅｎｄａｎｔＢｅｎｚｏＣｒｏｗｎＥｔｈｅｒｖｉａａＳｐａｃｅｒｏｆＵｎｄｅｃｙｌｏｘｙｍｅｔｈｙｌａｓＳｔａｔｉｏｎａｒｙＰｈａｓｅｆｏｒＣａｐｉｌｌａｒｙＣｈｒｏｍａｔｏｇｒａｐｈｙＬＵＸｕｅ－ｒａｎ；ＺＨＡＮＧＬ...

关键词： Polysiloxane Undecyloxy methyl spacer Crown ether

Positron Annihilation Mechanism Correlated with Microstructure of C60-Contained Chitosan

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Chinese Physics Letters 2000年第6期17卷 457-459页

作者： DAI Yi-Qun HE Chun-Qing LI Shi-Qing FANG Peng-Fei chen yuan-yin WANG Shao-jie Department of Physics Wuhan UniversityWuhan 430072 Department of Chemistry Wuhan UniversityWuhan 430072

Positron annihilation lifetime spectra measurements were performed on C_(60)-containing chitosan as a function of temperature ranging from 290 to *** the ortho-positronium annihilation lifetimeт_(3) and its intensity Is increase with increasing temperature,however,the values of I_(3) in C_(60)-containing chitosan are smaller than that in pure chitosan,and the slope ofт_(3) with temperature is also suppressed after C_(60) *** existing three models for positron annihilation in polymer have been compared to analyze the experiment *** is realized that only the spur reaction model,combined with the free volume model,can explain it *** ortho-positronium lifetime and intensity were affected by the local physicochemical environment of material,i.e.,free-volume structure,electron scavenging and trapping sites,*** linked C_(60) that play a significant chemical inhibition and quenching role on positronium formation and annihilation isfirst *** microstructure change brought by C_(60) group has also been discussed.

关键词： annihilation lifetime positronium

Silica-supported Polysiloxanes with Dithiacrown Ether Groups and Their Platinum Complexes

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Chemical Research in Chinese Universities 1992年第4期8卷 439-444页

作者： chen yuan-yin, LU Xue-ran and SONG Xiao-ping(Department of Chemistry, Wuhan University, Wuhan, 430072)

The present paper represents the syntheses of polypropyloxymethyldithia 15-crown-5 and 18-crown-6 supported on silica and their platinum complexes. The platinum complexes are effective catalysts for the hydrosilylation of olefins with triethoxysilane. The influences of temperature, amount of platinum complexes used and the nature of olefins used on the catalytic activity of the complexes are also investigated in this paper.

关键词： Functionalized polysiloxane Thiacrown ether Platinum complex Hydrosilyla-tion catalyst

(η^(2)C_(60))Pt (PPh_3)_2 as the Catalystfor the Hydrosilylation of Olefins

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Chemical Research in Chinese Universities 1994年第4期10卷 338-340页

作者： chen yuan-yin SHENG Rong-shen and LIU ying(Departrnent of Chernistry , Wuhan University , Wuhan, 430072 )

（η￣２Ｃ＿（６０））Ｐｔ（ＰＰｈ＿３）＿２ａｓｔｈｅＣａｔａｌｙｓｔｆｏｒｔｈｅＨｙｄｒｏｓｉｌｙｌａｔｉｏｎｏｆＯｌｅｆｉｎｓＣＨＥＮＹｕａｎ－ｙｉｎ，ＳＨＥＮＧＲｏｎｇ－ｓｈｅｎａｎｄＬＩＵＹｉｎｇ（Ｄｅｐａｒ... 详细信息

（η￣２Ｃ＿（６０））Ｐｔ（ＰＰｈ＿３）＿２ａｓｔｈｅＣａｔａｌｙｓｔｆｏｒｔｈｅＨｙｄｒｏｓｉｌｙｌａｔｉｏｎｏｆＯｌｅｆｉｎｓＣＨＥＮＹｕａｎ－ｙｉｎ，ＳＨＥＮＧＲｏｎｇ－ｓｈｅｎａｎｄＬＩＵＹｉｎｇ（ＤｅｐａｒｔｒｎｅｎｔｏｆＣｈｅｒｎｉｓｔｒ...

关键词： Fullerene Platinum. Hydrosilylation catalyst

4-Selena-7-thiaoctyl Polystyrene-supported Platinum Complex as Hydrosilylation Catalyst

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Chemical Research in Chinese Universities 1998年第4期14卷 56-59页

作者： MENG Ling zhi KE Ai qing and chen yuan yin (Department Chemistry, Wuhan University, Wuhan, 430072)

ＩｎｔｒｏｄｕｃｔｉｏｎＳｅｌｅｎｏｅｔｈｅｒｐｌａｔｉｎｕｍｃｏｍｐｌｅｘｅｓａｓａｎｅｗｋｉｎｄｏｆｈｙｄｒｏｓｉｌｙｌａｔｉｏｎｃａｔａｌｙｓｔｈａｖｅｂｅｅｎｄｒａｗｎｍｕｃｈａｔｅｎｔｉｏｎｒｅｃｅｎｔｌｙ... 详细信息

ＩｎｔｒｏｄｕｃｔｉｏｎＳｅｌｅｎｏｅｔｈｅｒｐｌａｔｉｎｕｍｃｏｍｐｌｅｘｅｓａｓａｎｅｗｋｉｎｄｏｆｈｙｄｒｏｓｉｌｙｌａｔｉｏｎｃａｔａｌｙｓｔｈａｖｅｂｅｅｎｄｒａｗｎｍｕｃｈａｔｅｎｔｉｏｎｒｅｃｅｎｔｌｙ．Ａｓｅｒｉｅｓｏｆｓｅｌｅｎｏｅ...

关键词： Polystyrene bound catalyst platinum complex hydrosilylation β methylthioethyl β ′ hydroxyethyl selenoether