The new derivative 2-amino-4-chloro-6-pyrazolyl-[1,3,5]triazine, 1, prepared by reaction of 2-amino-4,6-dichloro-[1,3,5]triazine with an excess of pyrazole, has been characterized by 1H, 13C and 15N NMR measurements and single crystal XRD structural determination. The non-equivalence of the NH2 hydrogens evidences the iminium character of this moiety. Compound 1, exploiting strong H-bonds, self-assembles generating supramolecular linear tapes. Theoretical calculations are in good agreement with experimental solid state and solution data. Electronic properties of 1 (lowest lying excitation energies and corresponding oscillator strength) have also been determined by time dependent DFT at the PBE level.
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Titolo: | An experimental and theoretical investigation of the molecular and electronic structure of 2-amino-4-chloro-6-pyrazolyl-[1,3,5]triazine, forming supramolecular linear tapes in the solid state |
Autori: | |
Data di pubblicazione: | 2008 |
Rivista: | |
Abstract: | The new derivative 2-amino-4-chloro-6-pyrazolyl-[1,3,5]triazine, 1, prepared by reaction of 2-amino-4,6-dichloro-[1,3,5]triazine with an excess of pyrazole, has been characterized by 1H, 13C and 15N NMR measurements and single crystal XRD structural determination. The non-equivalence of the NH2 hydrogens evidences the iminium character of this moiety. Compound 1, exploiting strong H-bonds, self-assembles generating supramolecular linear tapes. Theoretical calculations are in good agreement with experimental solid state and solution data. Electronic properties of 1 (lowest lying excitation energies and corresponding oscillator strength) have also been determined by time dependent DFT at the PBE level. |
Handle: | http://hdl.handle.net/11581/112342 |
Appare nelle tipologie: | Articolo |