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Revathi B.K.,Queen Marys College | Reuben Jonathan D.,Madras Christian College | Kalai Sevi K.,SCRI | Dhanalakshmi K.,Anna Siddha Medical College | Usha G.,Queen Marys College
Acta Crystallographica Section E: Crystallographic Communications | Year: 2015

In the title compound, 0.75C12H14ClNO2·0.25C12H14ClNO, which is an adduct comprising 0.75 4-hydroxypiperidin-1-yl or 0.25 4-piperidin-1-yl substituents on a common (4-chlorophenyl)methanone component; the dihedral angles between the benzene ring and the two piperidine rings are 51.6 (3) and 89.5 (7)°, respectively. The hydroxypiperidine ring is in a bisectional oriention (bi) with the phenyl ring. In the crystal, intermolecular O - H⋯O hydrogen bonds between the hydroxypiperidine group and the keto O atom lead to the formation of chains extending along the c- axis direction.


Revathi B.K.,Queen Marys College | Reuben Jonathan D.,Madras Christian College | Kalai Sevi K.,SCRI | Dhanalakshmi K.,Anna Siddha Medical College | Usha G.,Queen Marys College
Acta Crystallographica Section E: Crystallographic Communications | Year: 2015

In the title compound, C13H17NO2, the dihedral angle between the planes of the piperidine and benzene rings is 51.7 (2)°. The bond-angle sum around the N atom [359.8 (3)°] indicates sp 2 hybridization of the atom. In the crystal, O - H⋯O hydrogen bonds link the molecules, forming chains along [001].


Revathi B.K.,Queen Marys College | Reuben Jonathan D.,Madras Christian College | Kalai Sevi K.,SCRI | Dhanalakshmi K.,Anna Siddha Medical College | Usha G.,Queen Marys College
Acta Crystallographica Section E: Crystallographic Communications | Year: 2015

The title compound, C13H14NO2F3, crystallises with two molecules, A and B, in the asymmetric unit, with similar conformations. The dihedral angles between the piperidine and phenyl rings are 83.76(2) and 75.23(2)° in molecules A and B, respectively. The bond-angle sums around the N atoms [359.1 and 359.7° for molecules A and B, respectively] indicate sp 2 hybridization for these atoms. In the crystal, O - H⋯O hydrogen bonds link the molecules into separate [100] chains of A and B molecules. The chains are cross-linked by C - H⋯O interactions, generating alternating (001) sheets of A and B molecules. © 2015.


Revathi B.K.,Queen Marys College | Reuben Jonathan D.,Madras Christian College | Kalai Sevi K.,SCRI | Dhanalakshmi K.,Anna Siddha Medical College | Usha G.,Queen Marys College
Acta Crystallographica Section E: Crystallographic Communications | Year: 2015

The title compound, C13H16ClNO2, crystallized with two independent molecules in the asymmetric unit (A and B). The piperidinol ring in molecule B is disordered over two positions with a site occupancy ratio of 0.667(5):0.333(5). In both molecules these rings have a chair conformation, including the minor component in molecule B. Their mean planes are inclined to the benzene ring by 45.57(13)° in molecule A, and by 50.5(4)° for the major component of the piperidine ring in molecule B. In the crystal, the individual molecules are linked by O - H⋯O hydrogen bonds, forming chains of A and B molecules along the [100] direction. The chains are interlinked by C - H⋯O hydrogen bonds, forming ribbons. © 2015.

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