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January 1, 1980Journal of the Chemical Society Perkin Transactions 2

Triplet-state electron spin resonance studies of aryl cations. Part 3. Substituent and medium effects for aminophenyl cations

Hanna B. Ambroż Terence J. Kemp

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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.

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Ambroż et al. (1980) studied this question.

synapsesocial.com/papers/6a5bd7b868f4367e1704cfec https://doi.org/10.1039/p29800000768

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