Abstract
The asymmetric unit of the title compound, C22H16ClN3O5, consists of two crystallographically independent molecules. The fused rings of the imidazo[1,2-a]benzo[4,5]furo[3,2-d]pyrimidine system are nearly coplanar and the chlorophenyl rings are twisted with respect to the two pyrimidinone ring systems by 71.00 (2) and 62.59 (2)°. The C atoms of the ethyl side chain are disordered and were refined using a split model. In the crystal structure, the molecules are connected via weak intra- and intermolecular C—H⋯O interactions are present. The ethyl group in one molecule is disordered over two positions, with site occupancy factors 0.55 and 0.45; in the other molecule only the methyl group is disordered over two positions, with site occupancy factors 0.6 and 0.4.
Highlights
The fused rings of the imidazo[1,2-a]benzo[4,5]furo[3,2d]pyrimidine system are nearly coplanar and the chlorophenyl rings are twisted with respect to the two pyrimidinone ring systems by 71.00 (2) and 62.59 (2)
The molecules are connected via weak intra- and intermolecular C—H O interactions are present
The ethyl group in one molecule is disordered over two positions, with site occupancy factors 0.55 and 0.45; in the other molecule only the methyl group is disordered over two positions, with site occupancy factors 0.6 and 0.4
Summary
Key indicators: single-crystal X-ray study; T = 293 K; mean (C–C) = 0.004 Å; disorder in main residue; R factor = 0.056; wR factor = 0.161; data-to-parameter ratio = 14.5. The fused rings of the imidazo[1,2-a]benzo[4,5]furo[3,2d]pyrimidine system are nearly coplanar and the chlorophenyl rings are twisted with respect to the two pyrimidinone ring systems by 71.00 (2) and 62.59 (2). The C atoms of the ethyl side chain are disordered and were refined using a split model. The molecules are connected via weak intra- and intermolecular C—H O interactions are present. The ethyl group in one molecule is disordered over two positions, with site occupancy factors 0.55 and 0.45; in the other molecule only the methyl group is disordered over two positions, with site occupancy factors 0.6 and 0.4
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