An NMR and X-ray study of the structure of the azo coupling product of 4-dimethylaminopent-3-en-2-one and benzenediazonium-tetrafluoroborate
Jazyk angličtina Země Anglie, Velká Británie Médium print
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
14527160
DOI
10.1039/b303206j
Knihovny.cz E-zdroje
- MeSH
- boritany MeSH
- chemické modely MeSH
- diazoniové sloučeniny chemie MeSH
- dusík chemie MeSH
- hydrazony chemie MeSH
- krystalografie rentgenová metody MeSH
- kyseliny borité chemie MeSH
- magnetická rezonanční spektroskopie metody MeSH
- molekulární modely MeSH
- teplota MeSH
- uhlík chemie MeSH
- vodík chemie MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- benzenediazonium MeSH Prohlížeč
- boritany MeSH
- diazoniové sloučeniny MeSH
- dusík MeSH
- fluoroboric acid MeSH Prohlížeč
- hydrazony MeSH
- kyseliny borité MeSH
- phenylhydrazone MeSH Prohlížeč
- uhlík MeSH
- vodík MeSH
4-Dimethylaminopent-3-en-2-one reacts with two molecules of benzenediazonium-tetrafluoroborate to give compound 1. The structure of this compound was determined by means of X-ray analysis of its crystal and 1H, 13C and 15N NMR spectra of its solution in CDCl3. The molecule of this compound contains one azo group and one hydrazone group. The substance exists, both in crystal form and in solutions of concentrations above 0.1 mol l(-1), in the form of a dimer, in which the pair of molecules are bound by two hydrogen bonds N-H...N. On diluting the solution, the dimers decompose, the two forms being in an equilibrium that is rapid on the NMR time scale.
Citace poskytuje Crossref.org
A simple, enaminone-based approach to some bicyclic pyridazinium tetrafluoroborates
