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Acta Cryst. (2014). E70, o97-o98  [ doi:10.1107/S1600536813034107 ]


R. A. Nagalakshmi, J. Suresh, K. Malathi, R. R. Kumar and P. L. N. Lakshman

Abstract: The asymmetric unit of the title compound, C26H25ClN2O3, contains two independent mol­ecules (A and B). The conformation of the two mol­ecules differs essentially in the dihedral angle involving the two benzene rings. They are inclined to one another by 52.47 (10) in A and by 31.75 (11)° in B. In both mol­ecules, the six-membered piperidin-3-one rings have chair conformations. In mol­ecule A, all four five-membered rings have twist conformations. In mol­ecule B, only three of the four five-membered rings have twist conformations. The fourth, of the inden-1-one moiety, has an envelope conformation with the spiro C atom, bonded to the N atom of the pyrrolidine ring, as the flap. A weak intra­molecular O-H...N hydrogen bond occurs in each independent mol­ecule while a C-H...O inter­action is also observed in mol­ecule A. In the crystal, pairs of O-H...O hydrogen bonds link the mol­ecules, forming inversion dimers with graph-set motif R22(12). These dimers are further inter­connected by C-H...O and C-H...[pi] inter­actions, forming a three-dimensional network.

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