(IUCr) Crystallography Journals Online

[Contents scheme]

Acta Cryst. (2012). E68, o3084
[ doi:10.1107/S1600536812041438 ]

2-Methyl-3-(4-methylphenyl)-5,6-diphenyl-2,3-dihydropyrazine

A. Thiruvalluvar, N. Anuradha, S. Chitra, D. Devanathan and R. J. Butcher

Abstract: In the title molecule, C₂₄H₂₂N₂, four atoms (N-C-C-N) of the heterocyclic ring, with their attached H atoms, and all atoms of the methyl group, are disordered over two positions; the site-occupancy factor of the major component is 0.713 (6). The major disorder component of the heterocyclic ring adopts a half-chair conformation, with all substituents equatorial. The benzene ring adjacent to the methyl group forms dihedral angles of 79.68 (11) and 80.92 (11)° with the phenyl rings; the dihedral angle between adjacent phenyl rings is 59.10 (11)°. The crystal structure features three C-H [pi] interactions.