title: 2-Ethyl-3,5,6-triphenyl-pyrazine.
abstract: In the title mol-ecule, C(24)H(20)N(2), the pyrazine ring is significantly distorted from planarity, presumably due to steric crowding, and its conformation is well described as a flattened twist-boat. The benzene ring adjacent to the ethyl group forms dihedral angles of 53.79 (13) and 85.47 (12)° with the other benzene rings; the dihedral angle between adjacent benzene rings is 57.90 (12)°. The ethyl group is disordered over two positions; the site-occupancy factor of the major component is 0.546 (4). No hydrogen bonds are found in the crystal structure.
authors.affiliation: Postgraduate Research Department of Physics, Rajah Serfoji Government College (Autonomous), Thanjavur 613 005, Tamilnadu,  India.
authors.forename: N
authors.initials: N
authors.lastname: Anuradha
authors.forename: A
authors.initials: A
authors.lastname: Thiruvalluvar
authors.forename: S
authors.initials: S
authors.lastname: Chitra
authors.forename: D
authors.initials: D
authors.lastname: Devanathan
authors.forename: R J
authors.initials: RJ
authors.lastname: Butcher