biradical


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biradical

[bī′rad·ə·kəl]
(chemistry)
A chemical species having two independent odd-electron sites.
References in periodicals archive ?
b) biradical nouns with trisyllabic vocalic stems such as luhuD 'short' and pere 'family' in the genitive singular and nominative plural forms, e.
2]) is a biradical which contains 2 unpaired electrons with parallel spin configurations.
APPLICATION OF THE DECARBOXYLATIVE PHOTOCYCLIZATION: MEMORY OF CHIRALITY EFFECTS IN TRIPLET BIRADICAL REACTIONS
The detection of the Criegee biradical and measurement of how fast it reacts was made possible by a unique apparatus, designed by Sandia researchers, that uses light from a third-generation synchrotron facility, at the Lawrence Berkeley National Laboratory's Advanced Light Source.
The most reactive state is the triplet state (T*) in which carbonyl groups exist as a biradical.
It has fueled the centuries-old debate of whether the Semitic lexicon is primarily built on biradical or triradical bases, that is, whether triradical roots are original or developed out of a more archaic biconsonantal base.
The vertically expanded portions of the spectra measured at 433 K (downward arrows in Figure 5) indicate signals from the biradical, 2NO-HAS, in both samples.
This is, however, prevented to a large extent by its saturation with the stable biradical (air) oxygen.
The reaction proceeds via a triplet biradical and is thus not stereospecific.
Semitic linguists offer their Swiss-born British colleague 26 papers on such topics as Semitic triradicalism and the biradical question, some parallels in linguistic development between Biblical Hebrew and Neo-Aramaic, the script of Taiman, a questionable theory of Egyptian influence on a genre of Hebrew literature, Dinah in a Syriac poem on Joseph, an archaic Amharic poem on condemning wealth and glory, Dante and modern Hebrew literature, and humor in the novels of Peretz Smolenskin.
We have studied the nitroxide-mediated polymerization of styrene in miniemulsion, with the intent of maintaining a high degree of livingness by balancing the rates of biradical termination and disproportionation.
It is much more reasonable to postulate derivation from bn, a biradical.