Rajesh, K. and Vijayakumar, V. and Sarveswari, S. and Narasimhamurthy, T. and Tiekink, E.R.T. (2010) 1-{3-[(4-Oxopiperidin-1-yl)carbonyl]benzoyl}piperidin-4-one. Acta Crystallographica Section E: Structure Reports Online, 66 (8). O1988-U935. ISSN 1600-5368,
Full text not available from this repository.Abstract
Two independent molecules comprise the asymmetric unit in the title compound, C(18)H(20)N(2)O(4). One of the molecules exhibits disorder in one of its 4-piperidone rings, which is disposed over two orientations [site occupancy of the major component = 0.651 (5)]. The first independent molecule and the minor component of the second disordered molecule are virtually superimposable. The central four C atoms in the major component of the disordered molecule have an opposite orientation. All the 4-piperidone rings have a chair conformation. The carbonyl groups in each molecule have approximate anti conformations [O=C...C=O = 146.2 (2) and -159.9 (2)degrees]. The 4-piperidone rings lie to opposite sides of the central benzene ring in both molecules. In the crystal, molecules are linked by C-H...O interactions. The crystal studied was found to be a non-merohedral twin (twin law -1 0 0, 0 1 0, 0 - 1/2 - 1), the fractional contribution of the minor component being approximately 11%.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Subjects: | Q Science > Q Science (General) |
| Depositing User: | Mr Faizal 2 |
| Date Deposited: | 05 Feb 2015 02:13 |
| Last Modified: | 31 Jan 2019 05:16 |
| URI: | http://eprints.um.edu.my/id/eprint/12590 |
Actions (login required)
 |
View Item |
