Abstract
The structures and properties of quintet pyridyl-2,6-dinitrenes formed by low-temperature photolysis of 2,6-diazidopyridines were studied by ESR and quantum chemical (B3LYP/6-31G*) methods. The synthesized dinitrenes represent a new type of quintet tetraradicals for which the ratio of zero-field splitting parameters is ¦ E q¦/¦D q¦ = 1/3. This ratio is characteristic of quintet molecules in which the vector angle between two biradical centers is close to 114.5°.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1536–1540, September, 2006.
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Chapyshev, S.V. Photochemical synthesis and properties of quintet pyridyl-2,6-dinitrenes. Russ Chem Bull 55, 1593–1597 (2006). https://doi.org/10.1007/s11172-006-0459-9
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DOI: https://doi.org/10.1007/s11172-006-0459-9