Abstract
In the title compound, C9H15NO2, the piperidine ring exhibits a chair conformation. The butanedione subunit exhibits a conformation with the ketone C atom in an eclipsed position with respect to the amide carbonyl group. In the crystal, a two-dimensional layered arrangement is formed by hydrogen bonds of the C—H⋯O type between the methyl group and the exocyclic methylene unit as donor sites and the amide carbonyl O atom as the acceptor of a bifurcated hydrogen bond. These layers are oriented parallel to the ab plane.
Highlights
169 parameters All H-atom parameters refined Ámax = 0.31 e A À3 Ámin = À0.20 e A À3
The butanedione subunit exhibits a conformation with the ketone C atom in an eclipsed position with respect to the amide carbonyl group
A twodimensional layered arrangement is formed by hydrogen bonds of the C—HÁ Á ÁO type between the methyl group and the exocyclic methylene unit as donor sites and the amide carbonyl O atom as the acceptor of a bifurcated hydrogen bond
Summary
Symmetry codes: (i) Àx þ 1; y À 12; Àz þ 12; (ii) Àx þ 2; y À 12; Àz þ 12. Data collection: COLLECT (Nonius, 1998); cell refinement: DENZO (Otwinowski & Minor, 1997); data reduction: DENZO ; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al, 2006); software used to prepare material for publication: SHELXL97. 1. Related literature For the synthetic procedure, see: Sridharan et al (2010). For a survey concerning weak hydrogen bonds, see: Desiraju & Steiner (1999)
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