Acta Cryst. (2003). E59, o2030-o2031  [ doi:10.1107/S1600536803027004 ]

An orthorhombic polymorph of 2,3,2',3'-tetrakis(2-pyridyl)-6,6'-biquinoxalinyl

A. Neels and H. Stoeckli-Evans

Abstract: When recrystallized from a water-methanol solution, the title compound, C₃₆H₂₂N₈, gave orthorhombic crystals in the non-centrosymmetric space group Fdd2. The molecules are located on twofold rotation axes. The dihedral angle between the approximately planar quinoxaline moieties is 32.93 (4)°. The two pyridine substituents lie out of the plane of the quinoxaline moiety by 56.6 (2) and 33.5 (2)°, and are inclined to one another by 50.2 (2)°. Their N atoms are directed on opposite sides of the mean plane through the quinoxaline moiety.

Online 29 November 2003

Copyright © International Union of Crystallography
IUCr Webmaster