Received 28 March 2009
In the title compound, C19H13N5·3CH4O, the 2,6-bis(2-benzimidazolyl)pyridine molecule is essentially planar with an r.m.s. deviation for all non-H atoms of 0.185 Å. The crystal structure is stabilized by intermolecular O-HO, O-HN and N-HO hydrogen bonds and weak stacking interactions with centroid-centroid distances of 3.6675 (16) and 3.6891 (15) Å. The atoms of one of the methanol solvent molecules are disordered over two sites with refined occupancies of 0.606(8) and 0.394(8).
For the crystal structures of the mono- and sesquihydrate analogs of 2,6-bis(2-benzimidazolyl)pyridine, see: Freire et al. (2003). For the synthesis of 2,6-bis(2-benzimidazolyl)pyridine, see: Addison & Burke (1981).
Data collection: RAPID-AUTO (Rigaku/MSC 2004); cell refinement: RAPID-AUTO; data reduction: RAPID-AUTO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: LH2799 ).
The authors acknowledge financial support and a grant from `Qing Lan' Talent Engineering Funds and Students' Science and Technology Innovation Funds (grant No. DXS2008-040,041) of Lanzhou Jiaotong University. A grant from the Middle-Young Age Science Foundation (grant No. 3YS061-A25-023) and Long Yuan `Qing Nian' of Gansu Province is also acknowledged.
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