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- W2034634489 abstract "E.S.R. experiments at 1·3 K are reported for the photo-excited triplet state of zinc porphin (ZnP) and magnesium porphin (MgP) in single crystals of n-octane. The effect of partial and complete deuteriation, and the influence on the E.S.R. spectra of the addition of ethanol or benzene as a second solvent are given. It is found that most of the ZnP molecules occupy one orientation, whereas MgP + ethanol occurs in two orientations for which the molecules are coplanar but differ by a rotation of 90° about the out-of-plane axis. For ZnP, MgP, and free base porphin (H2P) the zero-field principal axes are parallel to within 5° and run through opposite nitrogen atoms. By E.S.R. combined with X-ray diffraction an insight into the orientation of the porphin molecules in the n-octane host is obtained. The fine structure results show a small (ZnP) to negligible (MgP) influence of the spin-orbit coupling of the metal atom. The observed hyperfine structure in ZnP closely resembles that in MgP and originates from four ..." @default.
- W2034634489 created "2016-06-24" @default.
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- W2034634489 date "1979-04-01" @default.
- W2034634489 modified "2023-10-01" @default.
- W2034634489 title "The metastable triplet state of zinc porphin and magnesium porphin: A study by E.S.R. in an n-octane crystal at 1·4 K" @default.
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- W2034634489 doi "https://doi.org/10.1080/00268977900100771" @default.
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