دورية أكاديمية
The crystal structure of the triclinic polymorph of 1,4-bis([2,2′:6′,2′′-terpyridin]-4′-yl)benzene
| العنوان: | The crystal structure of the triclinic polymorph of 1,4-bis([2,2′:6′,2′′-terpyridin]-4′-yl)benzene |
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| المؤلفون: | Alexander E. Sedykh, Dirk G. Kurth, Klaus Müller-Buschbaum |
| المصدر: | Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 12, Pp 1947-1951 (2019) |
| بيانات النشر: | International Union of Crystallography, 2019. |
| سنة النشر: | 2019 |
| المجموعة: | LCC:Crystallography |
| مصطلحات موضوعية: | crystal structure, terpyridine, c—h...π interactions, offset π–π interactions, Crystallography, QD901-999 |
| الوصف: | The title triclinic polymorph (Form I) of 1,4-bis([2,2′:6′,2′′-terpyridin]-4′-yl)benzene, C36H24N6, was formed in the presence of the Lewis acid yttrium trichloride in an attempt to obtain a coordination compound. The crystal structure of the orthorhombic polymorph (Form II), has been described previously [Fernandes et al. (2010). Acta Cryst. E66, o3241–o3242]. The asymmetric unit of Form I consists of half a molecule, the whole molecule being generated by inversion symmetry with the central benzene ring being located about a crystallographic centre of symmetry. The side pyridine rings of the 2,2′:6′,2′′-terpyridine (terpy) unit are rotated slightly with respect to the central pyridine ring, with dihedral angles of 8.91 (8) and 10.41 (8)°. Opposite central pyridine rings are coplanar by symmetry, and the angle between them and the central benzene ring is 49.98 (8)°. The N atoms of the pyridine rings inside the terpy entities, N...N...N, lie in trans–trans positions. In the crystal, molecules are linked by C—H...π and offset π–π interactions [intercentroid distances are 3.6421 (16) and 3.7813 (16) Å], forming a three-dimensional structure. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2056-9890 20569890 |
| العلاقة: | http://scripts.iucr.org/cgi-bin/paper?S2056989019015810Test; https://doaj.org/toc/2056-9890Test |
| DOI: | 10.1107/S2056989019015810 |
| الوصول الحر: | https://doaj.org/article/240a49ec953b4e9a8c344612a1c5ecf4Test |
| رقم الانضمام: | edsdoj.240a49ec953b4e9a8c344612a1c5ecf4 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20569890 |
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| DOI: | 10.1107/S2056989019015810 |