摘要:

AbstractPhenazine dissolved in a rigid toluene glass is excited to its triplet state by illumination with a modulated light source. The ESR signal is modulated, the nature of the modulation depending on the kinetics of population and depopulation of the triplet sublevels. Modulation of the ESR signal varies across the spectrum because of the dependence of the kinetics on orientation.

ISSN:0021-2148    

DOI:10.1002/ijch.197200002

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY

摘要:

AbstractSeven new ZnS polytypes of the family 28L are identified. They are 28L (18 3 5 2), 84R (5 5 5 3 3 3 2 2)3, 28L (26 2), 28L (13 5 7 3), 84R (13 7 3 5)3, 28L (3 3 3 3 3 3 3 3 2 2), and 84R (7 3 3 3 3 3 3 3)3. Indications of polytype transformation are presented and discussed.

ISSN:0021-2148    

DOI:10.1002/ijch.197200003

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY

摘要:

AbstractIsoprene is selectively dimerized to 1,5‐dimethyl‐1,5‐cyclooctadiene by the catalyst composed of nickel naphthenate, triethylaluminium and tri‐o‐cresylphosphite. At 500° and atmospheric pressure, 1,5‐dimethyl‐1‐cyclooctene thermally isomerizes to 2,6‐dime

ISSN:0021-2148    

DOI:10.1002/ijch.197200004

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY

摘要:

AbstractThe oxidation of luminol with t‐butyl hypochlorite and the fluorescence and chemiluminescence of some of the products are herein reported. The fluorescence was studied in the present work as a function of pH and the spectral distribution was then recorded at the pH of maximum fluorescence intensity; the chemiluminescence spectrum was obtained under the conditions of the luminol‐chemiluminesce

ISSN:0021-2148    

DOI:10.1002/ijch.197200005

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY

摘要:

AbstractThe synthesis and IR, UV, NMR; and mass spectral fragmentations of substituted phenoxaphosphinic acids I – XIV are reported. A diazo method gave I, and the Friedel‐Crafts method II – XIV. Infrared assignments: POH, broad bands, 2600, 2250, and 1650; C‐P, 1490 ‐ 1440; C‐O, 1280 ‐ 1260; P=0, 1190 ‐ 1140; and P‐O, 978 ‐ 974 cm−1. Characteristic bands also occur at 1330 ‐ 1320 and 1230 ‐ 1210 cm−1. The UV spectra possess maxima at 210 ‐ 220 mμ (log ∈ 4.50 ‐ 4.60), 240 ‐ 250 (4.20 ‐ 4.30), and 298 – 304 (3.65 – 3.75). The NMR spectra give τ 7.56 ppm for a 2‐methyl substituent, 7.48 for a 4‐methyl and a quartet at 7.26 and a triplet at 8.71 (J = 7.7 Hz) for a 2‐ethyl. The chemical shifts were virtually unaffected by alkyl or halogen substituents on the other aromatic ring but were shifted upfield byorthoormetamethyl substituents on the same ring. Singlets at τ 7.44 and 7.60 ppm in the spectrum of VIII gave calculated base values of about 7.28 and 7.44 for a 1‐methyl and 3‐methyl, respectively. The mass spectra are greatly influenced by the substituents. All showed loss of PO2H from the molecular ion or in the case of ethyl compounds after CH3·expulsion. CHO or CCIO was then eliminated

ISSN:0021-2148    

DOI:10.1002/ijch.197200006

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY

摘要:

AbstractCytochrome c was purified from the heart of the camel,Camelus dromedarius.Its chemical properties are typical of eukaryotic cytochromec.Camel heart cytochromecconsists of a single chain of 104 amino acids, a composition closely related to that of mammalian cytochrome c, and a heme peptide identical to horse cytochromec.However, its spectrum differs from that of all other cytochromecin having a 16% lower molar absorbancy of the reducedaband. The possible reason for this difference is discussed.

ISSN:0021-2148    

DOI:10.1002/ijch.197200007

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY

摘要:

AbstractA cell free system fromStaphylococcus aureus52A5 which incorporates UDPMurNAc‐L‐ala‐D‐isoglu‐L‐lys‐D‐ala‐14C‐D‐ala into lipid intermediates and peptidoglycan is described. During peptidoglycan synthesis, glycine binding to the lipid intermediates and peptidoglycan is also demonstrated as well as release of the terminal D‐alanine from the pentapeptide moiety. This release of D‐alanine is strongly

ISSN:0021-2148    

DOI:10.1002/ijch.197200008

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY

摘要:

AbstractThe mass spectra of several amine picrates were found to consist of the amine spectrum superimposed on, and hardly disguised by, that of picric acid. The mass spectrum of an amine isolable only as the picrate can thus be obtained.

ISSN:0021-2148    

DOI:10.1002/ijch.197200009

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY

摘要:

Abstract2‐Azabicyclo [3.2.0] heptane‐3‐one was synthesized by the reaction of cyclopentene and chlorosulphonyl isocyanate. The structure of the product was established by its hydrolysis to cis‐2‐amino‐cyclopentanecarb

ISSN:0021-2148    

DOI:10.1002/ijch.197200010

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.197200001

出版商:WILEY‐VCH Verlag    

年代:1972

数据来源: WILEY