| pubmed-article:22065467 | pubmed:abstractText | The chiral title compound, C(21)H(20)N(4)O(2), crystallizes as a racemic mixture. In the crystal, mol-ecules form centrosymmetric ?-overlapping dimers [inter-planar distance = 3.338?(6)?Å], which are further connected along the a axis forming centrosymmetric dimers via O-H?N hydrogen bonds. C-H?O inter-actions are also observed. The indolo[2,1-b]quinazoline group is somewhat bent, with a small dihedral angle of 6.3?(4)° between the plane of the quinazoline system and the plane of the benzene ring of the indole moiety. The C=N-N=C atoms of the azine group is oriented almost perpendicular [84.1?(2)°] to the mean plane of the quinazoline system. | lld:pubmed |
