Analysis of the crystalline packing of known aza[5]helicenes is presented together with some newly synthesized diaza[5]helicenes species, characterized by NMR spectroscopy and X-ray diffraction. The comparison with carbo[5]helicenes and monoaza[5]helicenes emphasizes the importance of the "shape factor" (responsible of the isomorphism between some species in the series) as well as the lack of a unique supramolecular effect organizing the molecules in the crystals (responsible of the polymorphism observed for some compounds).

Synthesis, Crystal Structure and Crystal Packing of Diaza[5]Helicenes

BAZZINI, Cristina;CARONNA, Tullio;FONTANA, Francesca;NATALI SORA, Isabella;
2008-01-01

Abstract

Analysis of the crystalline packing of known aza[5]helicenes is presented together with some newly synthesized diaza[5]helicenes species, characterized by NMR spectroscopy and X-ray diffraction. The comparison with carbo[5]helicenes and monoaza[5]helicenes emphasizes the importance of the "shape factor" (responsible of the isomorphism between some species in the series) as well as the lack of a unique supramolecular effect organizing the molecules in the crystals (responsible of the polymorphism observed for some compounds).
journal article - articolo
2008
Bazzini, Cristina; Caronna, Tullio Giuseppe Maria; Fontana, Francesca; Macchi, Piero; Mele, Andrea; NATALI SORA, Isabella; Panzeri, Walter; Sironi, An...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/21690
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