ENDOR spectra of phcnalenyl trapped m a polgcryrraLtme durene matns mdwzate that the phenalenyt mokcules are stltt rotatmg II) the sold matrw The amsotropw out-of-plane hyperfme components ,4$#%2) = -2 2j: MHz and .&(C~ 1 = +38 6 MHz are deiermmed Iknher data on amsotropic hyperfme andg tensors are
Endor investigations of biradicals in liquid crystals
β Scribed by Burkhard Kirste
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 416 KB
- Volume
- 130
- Category
- Article
- ISSN
- 0009-2614
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In the liquid crystal "Phase IV" which exhibits its nematic range between 16 and 76 "C ENDOR spectra of perinaphthenyi and tri-t-butylphencxyl radicals collld be recorded. it is demonstrated that the combined use of the ENDOR and liquid crystal methods yieIds valuabIe structural information.
IN FROZEN LIQUD CRYSTU Burkhard KIRSTE and Hans VAN WILLICEN An ENDOR stud) ofvanadyl biucctylaccIon.nc (VO(xx)2) abgncd m irozrn ncm~trc bqurd cry~& kwscnh.mccd ENDOR ugnal mrcnsrtrcs. whrch mdy ad m the mrcrprcta~~on oipowdcr CNDOR spectra obramcd from trJnsnron-mcrJI complckcs III ~ro~rop~cglxses
The analysis of the Iine'shifts yields ezq;3 Q//I = -2.5 MHz. This result could be rationalized by a population analysis of the nitrogen bonds, The theory predicts that the main contribution to the observed splitting comes from ihc unpzked n-electron.