1,2,4,5-Tetrafluoro-3,6-diiodobenzene–2,3-bis(pyridin-2-yl)pyrazine (1/1)
The components of the title 1:1 co-crystal, C14H10N4·C6F4I2, are connected via an N...I [2.959 (4) Å] halogen bond, in which the N atom is part of the relatively electron-rich pyrazine ring. The C6F4I2 molecule is almost planar [r.m.s. deviation...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
International Union of Crystallography
2010-11-01
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| Series: | Acta Crystallographica Section E |
| Online Access: | http://scripts.iucr.org/cgi-bin/paper?S1600536810041668 |
| Summary: | The components of the title 1:1 co-crystal, C14H10N4·C6F4I2, are connected via an N...I [2.959 (4) Å] halogen bond, in which the N atom is part of the relatively electron-rich pyrazine ring. The C6F4I2 molecule is almost planar [r.m.s. deviation = 0.038 Å] but there are significant twists in the pyrazine derivative, as seen in the dihedral angles [31.3 (2) and 54.6 (2)°] formed between the pendant pyridyl rings and the central pyrazine ring. The bimolecular aggregates are sustained in the crystal by C—H...F and π–π interactions [ring centroid(pyridyl)–ring centroid(benzene) = 3.678 (3) Å]. |
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| ISSN: | 1600-5368 |