摘要:

AbstractThe rate of the autoxidation of I−is largely enhanced in ice as compared to the liquid state. A peculiar effect of acidity on the rate has been observed. Remarkable inhibition is caused by doping the ice with some foreign substances. The rate in H2O‐ice is 2–3 times larger than in D2O‐ice. The frozen system displays a high photochemical sens

ISSN:0021-2148    

DOI:10.1002/ijch.196400040

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY

摘要:

Abstract1,2‐ and o‐dioxo compounds condense with phenylhydrazine in mineral acid solution to give yellow phenyl osazones. The non quinoidic 1,2‐dioxo compounds condense with ammonia and formaldehyde to give imidazoles which, as tertiary amines, show the Ohkuma color reaction with citric acid and acetic anhydride. Spot tests for pertinent dioxo compounds were developed on the basis of these

ISSN:0021-2148    

DOI:10.1002/ijch.196400041

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY

摘要:

AbstractThe synthesis of the unknown 2,2‐diphenylindoxyl (Ia) following the path VI → VII → VIII → Ia it herein described. The chemical evidence, and the infrared and ultraviolet spectra are in consonance with the structural formula. The unresolved signal at 5.24 p.p.m., appearing in the NMR spectrum of Ia is assigned to the N ‐

ISSN:0021-2148    

DOI:10.1002/ijch.196400042

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY

摘要:

AbstractThe reactions of cystine, cysteine, tryptophane and tyrosine in aqueous solution with atomic hydrogen, produced in an electrodeless high frequency discharge, were studied. The specific rate constants for the velocity of the reaction of the substrates with H atoms were found to be ks= 1.5 × 109; 1.0 × 109; 2 × 109and ∼4 × 1081·mole−1·sec−1for cystine, cysteine, tryptophan and tyrosine r

ISSN:0021-2148    

DOI:10.1002/ijch.196400043

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY

摘要:

AbstractIn distribution experiments of mercury (II) halides between a polyphenyl eutectic mixture and molten LiNO3‐ KNO3eutectic at 150°, various amounts of mixed potassium halide were added to the salt melt, in large excess over the mercury halide. From radiometric measurements of the overall distribution ratio D for mercury (II) species we calculated: the overall complex formation constants\documentclass{article}\pagestyle{empty}\begin{document}$ {\rm \alpha }_{{\rm ij}} = \frac{{\left[ {{\rm HgA}_{\rm i} {\rm B}_{\rm j} \left( {{\rm i} + {\rm j} - 2} \right)^ - } \right]}}{{\left[ {{\rm HgA}_{\rm 2} } \right]\left[ {{\rm A}^ - } \right]^{{\rm i} - 2} \left[ {{\rm B}^ - } \right]^{\rm j} }} $\end{document}and the “ligand mixing” constants\documentclass{article}\pagestyle{empty}\begin{document}$ {\rm X}_{{\rm ij}} = \frac{{\left[ {{\rm HgA}_{\rm i} {\rm B}_{\rm j} \left( {{\rm i} + {\rm j} - 2} \right)^ - } \right]^2 }}{{\left[ {{\rm HgA}_{{\rm i + 1}} {\rm B}_{{\rm j} - 1} \left( {{\rm i} + {\rm j} - 2} \right)^ - } \right]\left[ {{\rm HgA}_{{\rm i} - {\rm j}} {\rm B}_{{\rm j} + 1} \left( {{\rm i} + {\rm j} - 2} \right)^ - } \right]}} $\end{document}with A−and B−representing chloride‐bromide, chloride‐iodide or bromide‐iodide. The results show enhanced stability of Cl‐Br, but not of Cl‐I and Br‐I mixed complexes and point to the existence, in the molten salt phase, of only those species of mercury (II) which have a −2 charge (tetrahalide, trihalide‐mononitra

ISSN:0021-2148    

DOI:10.1002/ijch.196400044

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.196400045

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.196400046

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.196400047

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.196400049

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.196400050

出版商:WILEY‐VCH Verlag    

年代:1964

数据来源: WILEY