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Crystal structure of 2-[( E )-2-(4-bromo-phen-yl)diazen-1-yl]-4,5-bis-(4-meth-oxy-phen-yl)-1 H -imidazole: the first example of a structurally characterized tri-aryl-azo-imid-azole.
- Source :
-
Acta crystallographica. Section E, Crystallographic communications [Acta Crystallogr E Crystallogr Commun] 2021 Feb 26; Vol. 77 (Pt 3), pp. 305-308. Date of Electronic Publication: 2021 Feb 26 (Print Publication: 2021). - Publication Year :
- 2021
-
Abstract
- The title compound, C <subscript>23</subscript> H <subscript>19</subscript> BrN <subscript>4</subscript> O <subscript>2</subscript> , is a product of an azo coupling reaction between 3,4-bis-(4-meth-oxy-phen-yl)imidazole and 4-bromo-phenyl-diazo-nium tetra-fluoro-borate. Its crystal structure was determined using data collected at 120 K. The mol-ecule adopts a trans configuration with respect to the N=N double bond. The imidazole and aryl rings attached to the azo linkage are coplanar within 12.73 (14)°, which indicates significant electron delocalization within the mol-ecule. In the crystal, the mol-ecules form centrosymmetric dimers via pairs of N-H⋯O hydrogen bonds.<br /> (© Temesgen et al. 2021.)
Details
- Language :
- English
- ISSN :
- 2056-9890
- Volume :
- 77
- Issue :
- Pt 3
- Database :
- MEDLINE
- Journal :
- Acta crystallographica. Section E, Crystallographic communications
- Publication Type :
- Academic Journal
- Accession number :
- 33953956
- Full Text :
- https://doi.org/10.1107/S2056989021002024