Structural properties of some heteroaryl amines. Crystallographic studies on 2-N-(2,4,6-trinitrophenyl)-pyridineamine(I),-4-methylthiazoleamine(II), and-pyrimidineamine(III) |
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| Authors: | Luciano Forlani Luigi P. Battaglia Anna Bonamartini Corradi Paólo Sgarabotto |
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| Affiliation: | (1) Dipartimento di Chimica, Organica dell' Università, Viale Risorgimento 4, I-40136 Bologna, Italy;(2) Istituto di Chimica Generale ed Inorganica, Italy;(3) Istituto di Strutturistica Chimica, Università di Parma, Centro di Studio per la Strutturistica Diffrattometrica del C.N.R., Viale delle Scienze, I-43100 Parma, Italy |
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| Abstract: | Crystallographic properties of the title compounds are reported and inter- and intra-molecular interactions of the amino group are discussed and related to spectroscopic data. The geometry of the nitrogroups and of the 2-aminoheterocyclic moiety indicate that classical conjugation theory cannot explain the UV/vis spectra. The red shift observed on substituting H by a Me on the 2-amino group is interpreted in terms of internal charge-transfer. |
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