共查询到20条相似文献,搜索用时 15 毫秒
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Cornel VM 《The Journal of organic chemistry》2000,65(14):4464-4474
Reviews are listed in order of appearance in the sources indicated. In multidisciplinary review journals, only those reviews which fall within the scope of this Journal are included. Sources are listed alphabetically in three categories: regularly issued review journals and series volumes, contributed volumes, and other monographs. Titles are numbered serially, and these numbers are used for reference in the index. Major English-language sources of critical reviews are covered. Encyclopedic treatises, annual surveys such as Specialist Periodical Reports, and compilations of symposia proceedings are omitted. This installment of Recent Reviews covers principally the early part of the 2000 literature. Previous installment: J. Org. Chem. 2000, 65(7), 2267-76. Supporting Information Available: A file containing this Recent Review compilation in Microsoft Word and the data in rtf format. This material is available free of charge via the Internet at http://pubs. acs.org. 相似文献
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J. K. Dickens 《Journal of Radioanalytical and Nuclear Chemistry》1986,103(5):273-280
The half life of57Ni has been measured by Ge/Li/ -ray spectroscopy. The57Ni radionuclide was created by bremsstrahlung impinging a sample of elemental Ni. Time change of the activity of the 1377.6-keV -ray following decay of57Ni was analyzed to obtain a half life of 35.54±0.05 h for57Ni. 相似文献
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Emission Mössbauer spectra of mixedvalence trinuclear complexes,57Co-labelled [CoFe2O(CH3CO2)6(H2O)3] and [CoFe2O(CH3CO2)6 (py)3]py were compared with that of [CoCr2O(CH3CO2)6 (py)3]py. It was found that the57Fe atoms produced in57Co-labelled [CoFe2O(CH3CO2)6(H2O)3] and [CoFe2O(CH3CO2)6 (py)3]py showed a temperature-dependent mixed-valence state as observed in the absorption Mössbauer spectra of [Fe3O(CH3CO2)6 (H2O)3] and [Fe3O(CH3CO2)6 (py)3]py, respectively, while57Co-labelled [CoCr2O(CH3CO2)6 (py)3]py showed a temperature-independent divalent iron/II/ state. The results indicate that the decayed atoms keep their position at the sites of original57Co atoms and that the valence electrons are transferred through the intramolcular bondings. 相似文献
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T. Sato M. Katada K. Endo M. Nakada H. Sano 《Journal of Radioanalytical and Nuclear Chemistry》1993,173(1):107-123
Mixed-valence states of57Fe-atoms produced after EC-decay of57Co in oxo-centered trinuclear cobalt-iron carboxylates have been studied by means of emission Mössbauer spectroscopy. The emission Mössbauer spectra show nearly the same temperature dependence of the mixed-valence state as found in the absorption Mössbauer spectra of the corresponding trinuclear iron carboxylates. The results indicate that most of the decayed atoms keep their position at the sites of original57Co atoms. 相似文献
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