منابع مشابه
Rotational Isomerism in Bis-[/>-(3-Methyl-butyloxy)-phenyl]-thiourea
In case of Thiocarlidum (1) the thermoanalytical examination showed an endothermic transformation without loss of weight. This occured in samples recrystallized from cold polar solvents and the transformation proved to be non-reversible. The UV and IR spectra of the two samples differed characteristically and X-ray studies showed that the two modifications (in the following aand ßmodifications ...
متن کاملRotational isomerism in Bis-(p-(3-methyl-butyloxy)-phenyl)-thiourea.
In case of Thiocarlidum (1) the thermoanalytical examination showed an endothermic transformation without loss of weight. This occured in samples recrystallized from cold polar solvents and the transformation proved to be non-reversible. The UV and IR spectra of the two samples differed characteristically and X-ray studies showed that the two modifications (in the following aand ßmodifications ...
متن کاملStudy of molecular rotational isomerism using deuterium NMR in chiral oriented solvents.
Deuterium NMR in polypeptide chiral liquid crystals is used for the first time to investigate the internal rotational isomerism phenomenon, illustrated by the interconversion between conformers of 1-(2,6-dideutero-4-methylphenyl)naphthalene
متن کاملRotational isomerism in acetic acid: the first experimental observation of the high-energy conformer.
The high-energy conformer of acetic acid (cis-AA) is produced in an Ar matrix by vibrational excitation of the OH stretching overtone of the ground conformational state (trans-AA). IR-absorption spectroscopy provides a clear identification of the reaction product. cis-AA converts back to trans-AA in a time scale of minutes at 8 K by tunneling.
متن کاملIsomerism in Rh
The total absorption spectrometer (TAS) [1] mounted at the GSI on-line mass separator [2] was generally used for measuring β-intensity distributions of nuclei far from stability. Another particularly interesting application is, however, to investigate the structure of individual (low-lying) states of the β-decay parent and daughter nucleus, including isomers. As an example, we present here the ...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1972
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.45.298