Triplet-state electron spin resonance studies of aryl cations. Part 3. Substituent and medium effects for aminophenyl cations
- 1 January 1980
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 5,p. 768-772
- https://doi.org/10.1039/p29800000768
Abstract
The presence of a strong medium effect on the observation of triplet-state Ar+ has been noted, enabling extension of our previous studies to further examples of triplet Ar+ including that of the parent molecule of the series, p-NH2-C6H4 + which features a D parameter of 0.2967 cm–1 and of the o-morpholinophenyl cation (D 0.1671 cm–1) which is the first example of Ar+ stabilised in its triplet state by a single ortho-substituent. The trend, noted earlier, for a large D parameter to be associated with a good π-donor in the 4-position, is confirmed by new examples.Keywords
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