摘要:

AbstractCerium(III) chelate of 7‐iodo‐8‐hydroxyquinoline‐5‐sulphonic acid(ferron) has been studied spectrophotometrically in aqueous solution at 25°C and at an ionic strength of 0.1M. The formation of this chelate waspH dependent, and the optimumpH range was between 5.5 to 6.0. Its mole ratio of ligand to cerium(III) ion was found to be 2 to 1 stoichiometry and the formation constant, logK, was determined as 10.15. Enthalpy and entropy changes characterizing the formation of the chelate have been calculated as follows: ΔG° =‐13.85kcal mole‐1, ΔH°= −5.03kcal mole‐1, ΔS°=29.56eu mole‐1. By using the wavelength of 370nm, determination of trace amount of cerium(III) ion with the sensitivity o

ISSN:0009-4536    

DOI:10.1002/jccs.197800001

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe effect of temperature, agitation, and content of gold in the solution on the thickness of electroplated gold at various current densities can be easily explained by their effect on the limiting current. Diffusion coefficient of aurocyanide ion, thickness of diffusion layer, and the activity of aurocyanide ion in the bulk solution are the three major factors to affect the limiting current. It was found that the change of temperature will affect both diffusion coefficient and thickness of diffusion layer. However, the thickness of diffusion layer is mainly determined by the means of agitation.

ISSN:0009-4536    

DOI:10.1002/jccs.197800002

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractComplexes of iron(II) dichloride with monoacetyl and 1, 1′‐diacetylferrocence thiosemicarbazone have been prepared and characterized by means of optical spectra and magnetic measurement, and these structures have been investigated by Mössbauer spectra. It is inferred that the structures for iron(II) complexets of monoacetylferrocence thiosemicarbazone and 1, 1′‐diacetylbis (thiosemicarbazone) are monomer and polymer resp

ISSN:0009-4536    

DOI:10.1002/jccs.197800003

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractSpiropentane was photolyzed using xenon 1470Å resonance light source at room temperature. The photolysis products were analyzed by means of FID‐gas‐chromatographic technique. Through the information about the yields of products, the major primary process of this light‐molecule interaction was assigned as C‐C bond breakage. Methylenecyclobutane, which has been an identified isomerization product of excited spiropentane molecule, was not able to be produced at present high excitatio

ISSN:0009-4536    

DOI:10.1002/jccs.197800004

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe stability constants for the formation of [Cu(teta)X]+(blue) from [Cu(teta)]2+(blue) and X‐ (where X=Cl, Br, I) were determined by spectrophotometric method at 15°, 25° and 35°C. The corresponding ΔH° and ΔS° values were obtained from the variations of the stability constants between 15° and 35°C. For the same halide ion, the stability constant of [Cu(tetb)X]+(blue) is larger than that of [Cu(teta

ISSN:0009-4536    

DOI:10.1002/jccs.197800005

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe peptization of thorium hydroxide and thorium oxide sol on the preparation of microsphere of nuclear fuels are studied. These sols are prepared mainly by dispersing hydrated thorium oxide in nitric acid. A main character of ThO2sol is its NO3−/Th mole ratio. After peptization, the nitrate is presented as two forms; i. e., sorbed by particles of the sol and free in the aqueous solutions. The adsorbed NO3−/Th mole ratio depends on the average crystallite size of thorium oxide. In certain size range, the adsorbed NO3−/Th of ThO2sol prepared from thorium oxalate is inversely proportional to the crystallite size. The different series of thorium oxide are made by different methods. In this paper the crystallite size is obtained from 33 to 84 A by changing calcination tempera

ISSN:0009-4536    

DOI:10.1002/jccs.197800006

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractHydrogen atoms from the mercury photosensitized decomposition of hydrogen was allowed to interact with ethylene. Product distributions of this interaction were analyzed with the FID‐gas‐chromatographic technique. Such distribution has been used to interprete, based on a proposed mechanism, the pressure effect on the following chemically activated process:\documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {H + C_2 H_5 \to C_2 H_6 *} \hfill & {2CH_3 } \hfill \\ {} \hfill & {C_2 H_6 } \hfill \\\end{array} $$\end{document}kPat 35°C has been determined to be 1.7×10‐7sec‐1from this observed pressu

ISSN:0009-4536    

DOI:10.1002/jccs.197800007

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractFrom the hexane and acetone extractive of the wood of Keteleeria davidiana Beissner, α‐pinene, β‐pinene, limonene, α‐copaene, bornyl acetate, β‐elemene, caryophyllene, caryophyllene oxide, α‐selinene, β∼selinene, selin‐11‐en‐4α‐o1, laevojunenol, α‐cyperone, stigmasterol, β‐sitosterol, tetracosyltetracosanoate, docosanyl tetracosanoate, hexacosanyltetracosanoate, tetracosanol, hexacosanol, docosanol, α‐conidendrin and 15‐hydroxydehydroabietic acid were isolated. Straight chain saturated hydrocarbons (

ISSN:0009-4536    

DOI:10.1002/jccs.197800008

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractComplexes of nickel(II) aryl carboxylates with a general formula Ni(RC6H4COO)2L2where R=H,p‐CH3.p‐Cl,m‐&p‐NO2; and L = morpholine and piperidine; have been prepared by the interaction of nickel(II) aryl carboxylates with a large excess of appropriate amine. Unlike parent anhydrous nickel(II) aryl carboxylates all these complexes are soluble in common organic s

ISSN:0009-4536    

DOI:10.1002/jccs.197800009

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

Abstract1:1 Adducts of composition Cu(CH3‐xClxCOO)4L and 1:2 adducts of composition Cu(CH3‐xClxCOO)2L2where x=1‐3 and L is pyridine N‐Oxide (PyNO), 2‐picoline N‐oxide (2‐PicNO) or 3‐picoline N‐oxide (3‐PicNO) have been isolated by the interaction of copper(II) chloroacetates with the appropriate N‐oxide ligands. The adducts ar

ISSN:0009-4536    

DOI:10.1002/jccs.197800010

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY