Nitrogen and proton hyperfine interactions in the triplet state of azanaphthalenes at zero field
- 15 March 1975
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 62 (6) , 2015-2025
- https://doi.org/10.1063/1.430788
Abstract
The zero field optically detected ESR and ENDOR spectra of the triplet state of 1,8−diazanaphthalene are presented and completely interpreted in terms of a spin Hamiltonian which includes proton hyperfine interactions. The latter are shown to be of considerable importance at zero field even in systems containing quadrupolar nitrogen nuclei. The previously unassigned features in the zero field spectra of diazanaphthalenes are explained and some new assignments are proposed in quinoline.Keywords
This publication has 22 references indexed in Scilit:
- Polarization measurements in optically detected electron spin resonance of excited triplet states at zero fieldChemical Physics Letters, 1973
- Determination of the absolute sign of the electron spin dipolar and nuclear quadrupolar interactions in molecular excited triplet statesThe Journal of Chemical Physics, 1973
- Endor in the 3.601 GHz zero-field transition of phosphorescent quinoline C9ND7: determination of the 14N quadrupolar splittingChemical Physics Letters, 1973
- A constrained refinement of the structure of dureneActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1973
- Phosphorescence-microwave double-resonance studies of 1,3-, 1,5-, and 1,8-diazanaphthaleneChemical Physics Letters, 1971
- Triplet State EPR of 1,5-NaphthyridineThe Journal of Chemical Physics, 1971
- Optically detected 35Cl and 37Cl hyperfine and nuclear quadrupole interactions in excited triplet states in zero fieldChemical Physics Letters, 1970
- Hyperfine Interactions in the Triplet State EPR of QuinoxalineThe Journal of Chemical Physics, 1970
- 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
- Optical detection of phosphrescent triplet state endor in zero fieldChemical Physics Letters, 1969