Research Article: 2,3-Dihydro­pyrrolo­[2,1-b]quinazoline-9(1H)-thione

Date Published: June 01, 2012

Publisher: International Union of Crystallography

Author(s): Azizbek O. Nasrullayev, Burkhon Zh. Elmuradov, Kambarali K. Turgunov, Bakhodir Tashkhodjaev, Khusnutdin M. Shakhidoyatov.


In the crystal, mol­ecules of the title compound, C11H10N2S, are connected by C—H⋯N inter­actions around threefold axes. Furthermore, they form stacks along the c axis showing π–π inter­actions between pyrimidine rings [centroid–centroid distance = 3.721 (1) Å]. The central ring is essentially planar with an r.m.s. deviation of 0.007 Å. The five-membered ring adopts an envelope conformation with the flap atom deviating by 0.241 (4) Å from the mean plane (r.m.s. deviation = 0.002 Å) through the other four ring atoms.

Partial Text

For the synthesis of 2,3-dihydro-1H,9H-pyrrolo­[2,1-b]quinazolin-9-one and the title compound, see: Abduraza­kov et al. (2007 ▶); Shakhidoyatov & Kadyrov (1977 ▶); Elmuradov et al. (2010 ▶). For related structures, see Elmuradov et al. (2010 ▶); Turgunov et al. (1995 ▶).




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