Abstract
The temperature dependence of ESR spectra of the phenyl isopropyl nitroxide radical and its substituted derivatives has been studied. The correctness of spectrum parameters has been controlled by computer simulation. It has been stated that the two ortho protons and one para proton on the phenyl group of the unsubstituted compound are unequivalent, one of them having a coupling constant different from that of the other two ones. At room temperature, the value of the two equivalent ortho couplings is lower than that of the para coupling. At low temperature, however, the value of the two equivalent couplings is higher. These observations are interpreted by the rotational conditions of the phenyl ring.
| Original language | English |
|---|---|
| Pages (from-to) | 163-168 |
| Number of pages | 6 |
| Journal | Journal of Molecular Structure |
| Volume | 46 |
| Issue number | C |
| DOIs | |
| Publication status | Published - 1978 |
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ASJC Scopus subject areas
- Structural Biology
- Organic Chemistry
- Physical and Theoretical Chemistry
- Spectroscopy
- Materials Science (miscellaneous)
- Atomic and Molecular Physics, and Optics
Cite this
ESR study of internal rotation in the isopropyl phenyl nitroxide radical. / Jókay, L.; Rockenbauer, A.; Simon, P.; Túdós, F.
In: Journal of Molecular Structure, Vol. 46, No. C, 1978, p. 163-168.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - ESR study of internal rotation in the isopropyl phenyl nitroxide radical
AU - Jókay, L.
AU - Rockenbauer, A.
AU - Simon, P.
AU - Túdós, F.
PY - 1978
Y1 - 1978
N2 - The temperature dependence of ESR spectra of the phenyl isopropyl nitroxide radical and its substituted derivatives has been studied. The correctness of spectrum parameters has been controlled by computer simulation. It has been stated that the two ortho protons and one para proton on the phenyl group of the unsubstituted compound are unequivalent, one of them having a coupling constant different from that of the other two ones. At room temperature, the value of the two equivalent ortho couplings is lower than that of the para coupling. At low temperature, however, the value of the two equivalent couplings is higher. These observations are interpreted by the rotational conditions of the phenyl ring.
AB - The temperature dependence of ESR spectra of the phenyl isopropyl nitroxide radical and its substituted derivatives has been studied. The correctness of spectrum parameters has been controlled by computer simulation. It has been stated that the two ortho protons and one para proton on the phenyl group of the unsubstituted compound are unequivalent, one of them having a coupling constant different from that of the other two ones. At room temperature, the value of the two equivalent ortho couplings is lower than that of the para coupling. At low temperature, however, the value of the two equivalent couplings is higher. These observations are interpreted by the rotational conditions of the phenyl ring.
UR - http://www.scopus.com/inward/record.url?scp=49349128913&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=49349128913&partnerID=8YFLogxK
U2 - 10.1016/0022-2860(78)87138-5
DO - 10.1016/0022-2860(78)87138-5
M3 - Article
AN - SCOPUS:49349128913
VL - 46
SP - 163
EP - 168
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
SN - 0022-2860
IS - C
ER -