Received 26 April 2012
In the title compound, C26H28N42+·2PF6-, the complete cation is generated by a crystallographic twofold axis. The benzimidazole ring is almost planar (r.m.s. deviation = 0.0207 Å) and makes dihedral angles of 50.12 (2)° with its symmetry-related component and 65.81 (2)° with the central benzene ring. In the crystal, molecules are linked into a three-dimensional network by C-HF interactions. A - interaction with a centroid-centroid distance of 3.530 (1) Å is observed. Four F atoms of the hexafluorophosphate anion are disordered over two sets of sites in a 0.889 (6):0.111 (6) ratio.
Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB6760 ).
RAH thanks Universiti Sains Malaysia (USM) for the Research University (RU) grants (1001/PKIMIA/811157 and 304/PKIMIA/6511123). MAI is grateful to (IPS) USM for financial support [fellowship: USM·IPS/JWT/1/19 (JLD 6)] and the research attachment fund [P-KM0018/10(R) - 308/AIPS/415401]. HKF thanks USM for the Research University Grant No. 1001/PFIZIK/811160.
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