ENDOR measurements of the pyrene-TCNB excited triplet state in the CT crystal of naphthalene-TCNB have been performed at 130 K. Proton hyperfine tensors of both the donor and the acceptor molecule have been determined. Isotropic hyperfine coupling constants have served to obtain spin distribution and CT character (16%) of the trap. Experimental hyperfine dipolar tensors of pyrene protons are averaged by motion and are reproduced by a dynamical model in which rotation of ± 16° about the long in-plane axis accompanied with that of ± 5° about the normal to the molecular plane. © 1985.
ENDOR of the pyrene triplet-state in the charge-transfer crystal naphthalene tetracyanobenzene.
MANIERO, ANNA LISA;
1985
Abstract
ENDOR measurements of the pyrene-TCNB excited triplet state in the CT crystal of naphthalene-TCNB have been performed at 130 K. Proton hyperfine tensors of both the donor and the acceptor molecule have been determined. Isotropic hyperfine coupling constants have served to obtain spin distribution and CT character (16%) of the trap. Experimental hyperfine dipolar tensors of pyrene protons are averaged by motion and are reproduced by a dynamical model in which rotation of ± 16° about the long in-plane axis accompanied with that of ± 5° about the normal to the molecular plane. © 1985.
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