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2,3,7,8-Tetra-2-pyridylpyrazino[2,3-g]quinoxaline dihydrate

✍ Scribed by Neels, Antonia ;Stoeckli-Evans, Helen

Publisher: International Union of Crystallography
Year: 2006
Tongue: English
Weight: 283 KB
Volume: 62
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s1600536806041213

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✦ Synopsis

The title compound, C 30 H 18 N 8 Á2H 2 O, is a solvate of 2,3,7,8tetra(pyridin-2-yl)pyrazino[2,3-g]quinoxaline and, like the latter, is crystallographically centrosymmetric. The pyrazine ring makes dihedral angles of 54.95 (6) and 28.09 (6) with the two independent pyridine rings. The two pyridine rings are inclined to one another by 56.77 ( 7) , with their N atoms facing each other. In the crystal structure, adjacent molecules are linked by O-HÁ Á ÁN hydrogen bonds, forming a wide ribbon-like structure extending in the ac plane.

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