Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 3 (March 2013)


organic compounds



rk2390 scheme

Acta Cryst. (2013). E69, o349    [ doi:10.1107/S160053681300319X ]

N-(Pyrazin-2-yl)-1,8-naphthyridin-2-amine

Y.-S. Duan, W.-Z. Wang, Y.-S. Wen, Y.-Q. Zhu and S.-M. Peng

Abstract: There are two independent molecules in the asymmetric unit of the title compound, C12H9N5, in which the C-N(amine)-C angles differ slightly [129.63 (11) and 132.02 (11)°]. In each independent molecule, an intramolecular C-H...N hydrogen bond stabilizes the molecular structure, forming an S(6) ring motif. The independent molecules are linked via an N-H...N hydrogen bond. Further N-H...N and C-H...N hydrogen bonds connect the molecules into chains along c axis. Pairs of C-H...[pi] interactions between the chains lead to sheets parallel to the b axis. These are linked by [pi]-[pi] interactions between the naphthyridine and pyrazine rings [centroid-centroid separations of 3.553 (8) Å] into a three-dimensional supramolecular network.


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