Determination of the 14N quadrupole tensor of phenazine in its lowest excited triplet state by ODNQR
- 15 February 1978
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 68 (4), 1337-1343
- https://doi.org/10.1063/1.435951
Abstract
The first complete determination of the 14N nuclear quadrupole tensor in the photoexcited triplet state of an organic molecule was made feasible by an alternative to ODENDOR. Instead of using a simultaneous desaturation method (cw‐ODENDOR), a procedure involving sequential population transfer between specific electron–nuclear spin levels was adopted. This new method is demonstrated for phenazine‐d8 in a Shpolskii matrix and yields ‖e2qQ/h‖= (4.36±0.02) MHz; η=+0.21±0.03.Keywords
This publication has 8 references indexed in Scilit:
- Nitrogen and proton hyperfine interactions in the triplet state of azanaphthalenes at zero fieldThe Journal of Chemical Physics, 1975
- Spin-forbidden radiationless processes in isoelectronic molecules: Anthracene, acridine and phenazineMolecular Physics, 1974
- Multiple spin-echoes in a photo-excited triplet stateChemical Physics Letters, 1973
- Endor in the 3.601 GHz zero-field transition of phosphorescent quinoline C9ND7: determination of the 14N quadrupolar splittingChemical Physics Letters, 1973
- Non-empirical interpretation of nitrogen 14 nuclear quadrupole coupling constantsTheoretical Chemistry Accounts, 1971
- The interpretation of optically detected endor in zero field and their relationship to 14N nuclear quadrupole interactions in 3 (ππ*) states of quinoline and quinoxalineChemical Physics Letters, 1970
- Electron spin resonance of triplet state phenazineChemical Physics Letters, 1969
- The nitrogen atom orbital populations in the azabenzenes as determined by their14N nuclear quadrupole coupling constantsMolecular Physics, 1966