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Acta Crystallogr Sect E Struct Rep Online
; 67(Pt 10): o2695-6, 2011 Oct 01.
Article
in English
| MEDLINE
| ID: mdl-22065467
ABSTRACT
The chiral title compound, C(21)H(20)N(4)O(2), crystallizes as a racemic mixture. In the crystal, mol-ecules form centrosymmetric π-overlapping dimers [inter-planar distance = 3.338â (6)â Å], which are further connected along the a axis forming centrosymmetric dimers via O-Hâ¯N hydrogen bonds. C-Hâ¯O inter-actions are also observed. The indolo[2,1-b]quinazoline group is somewhat bent, with a small dihedral angle of 6.3â (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 [84.1â (2)°] to the mean plane of the quinazoline system.