Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 8 (August 2013)


organic compounds



gg2114 scheme

Acta Cryst. (2013). E69, o1286-o1287    [ doi:10.1107/S1600536813019168 ]

5-(4-Chlorophenyl)-7-(4-methylphenyl)-4-(pyrrolidin-1-yl)-7H-pyrrolo[2,3-d]pyrimidine

U. H. Patel, R. D. Modh and D. A. Shah

Abstract: The title compound, C23H21ClN4, contains two molecules (A and B) in the asymmetric unit, which are related to one another by a pseudo-inversion center. The non-aromatic pyrrolidine ring in each independent molecule adopts a half-chair conformation; the ring puckering parameters are [theta] = 0.407 (3) Å and [varphi] = 270.5 (4)°, and the pseudo-rotation parameters are [rho] = 72.5 (3)° and [tau] = 42.2 (2)° for an N-C bond of molecule A, and the corresponding values are 0.415 (3) Å, 271.6 (4)°, 73.6 (3)° and 42.6 (2)° for molecule B. The dihedral angles between the central fused-ring system and the substituted chlorophenyl and methylphenyl rings are 66.35 and 45.59°, respectively, for molecule A, and 64.51 and 41.89° for molecule B. The geometry of all four intramolecular C-H...[pi] interactions are of type III. [pi]-[pi] interactions involving the centroids of symmetry-related pyrrole rings of molecule B are 4.390 Å, contributing further to the stability of the molecule.


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