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In the title compound (systematic name: 8-chloro-11-{1-[(5-methyl­pyridin-3-yl)meth­yl]piperidin-4-yl­idene}-6,11-di­hydro-5H-benzo[5,6]cyclo­hepta­[1,2-b]pyridine), C26H26ClN3, the dihedral angle between the mean planes of the chloro­phenyl and cyclo­hepta­[1,2-b]pyridinyl rings fused to the cyclo­heptane ring is 56.6 (1)°. The mean planes of the cyclo­hepta­[1,2-b]pyridinyl and 5-methyl­pyridin-3-yl rings are twisted by 64.9 (4)°. The central piperizene group is in a slightly distorted chair configuration. A weak intra­molecular C—H...N inter­action is observed between the cyclo­hepta­[1,2-b]pyridinyl and piperidin-4-yl­idene moieties.
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