8-Chloro-5-(4-methylpiperazin-1-yl)-11H-pyrido[2,3-b][1,5]benzodiazepine

The crystal structure determination of C₁₇H₁₈ClN₅ has been undertaken as part of our studies of dopamine receptors. The diazepine ring is in a boat conformation while the piperazine ring is in the normal chair conformation. The dihedral angle between the two aromatic rings that lie on the same side of the diazepine moeity is 126.4 (1)°. There is one N-H...N hydrogen bond [N...N 3.184 (3) Å].

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