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Monoaza[5]helicenes. Part 2: Synthesis, characterisation and theoretical calculations |
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| Authors: | Sergio Abbate Tullio Caronna Francesca Fontana Fabrizio Gangemi Andrea Mele Walter Panzeri |
| Institution: | a Dipartimento di Scienze Biomediche e Biotecnologie, Universita` di Brescia, Viale Europa 11, I-25123 Brescia b Dipartimento di Ingegneria Industriale dell'Università di Bergamo, Viale Marconi 5, I-24044 Dalmine (Bg), Italy c Dipartimento di Chimica, Materiali ed Ingegneria Chimica ‘Giulio Natta’ del Politecnico, Via Mancinelli 7, I-20131 Milano, Italy d CNR-Istituto di Chimica del Riconascimento Molecolare, Via Mancinelli 7, I-Milano, Italy |
| Abstract: | The synthesis of four different monoaza5]helicenes is reported, to complete the whole series of these compounds, so that systematic studies on their properties can be carried out. They were fully characterised via NMR. A theoretical approach to explain why ring closure occurs to give the most crowded compound is reported, in comparison with earlier calculation methods. |
| Keywords: | Helical structures Helicenes Molecular orbital calculations Photochemistry |
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