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Resonance Assisted Chalcogen Bonding as a New Synthon in the Design of Dyes |
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| Authors: | Dr. Atash V. Gurbanov Dr. Maxim L. Kuznetsov Dr. Kamran T. Mahmudov Prof. Armando J. L. Pombeiro Prof. Giuseppe Resnati |
| Affiliation: | 1. Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;2. Laboratory of Nanostructured Fluorinated Materials (NFMLab), Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy |
| Abstract: | Intramolecular chalcogen bonding in arylhydrazones of sulfamethizole is strengthened by conjugation in the π-system of a noncovalent five-membered ring. The S⋅⋅⋅O distance in the sulfamethizole moiety of these compounds ranges from 2.698(3) to 2.806(15) Å, which indicates its strong dependence on the attached arylhydrazone fragments. Information on the nature of the intramolecular chalcogen bond was afforded by DFT calculations. |
| Keywords: | chalcogen bonds noncovalent interactions synthesis |