title: Crystal structure of 2,2-di-chloro-1-(piperidin-1-yl)ethanone.
abstract: In the title compound, C7H11Cl2NO, the piperidine ring shows a chair conformation and the bond-angle sum at the N atom is 359.9°. The H atom of the di-chloro-methyl group is in an eclipsed conformation with respect to the carbonyl group (H-C-C=O = -5°). In the crystal, inversion dimers are linked by pairs of C-H⋯O hydrogen bonds between the di-chloro-methyl group and the carbonyl O atom, which generate R 2 (2)(8) loops. The dimers are linked into a ladder-like structure propagating in the [100] direction by short O⋯Cl [3.1084 (9) Å] contacts.
authors.affiliation: University Koblenz-Landau, Institute for Integrated Natural Sciences, Universitätsstrasse 1, 56070 Koblenz, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Schwierz
authors.affiliation: Friedrich-Schiller-University Jena, Institute of Inorganic and Analytical Chemistry, Humboldtstrasse 8, 07743 Jena, Germany.
authors.forename: Helmar
authors.initials: H
authors.lastname: Görls
authors.affiliation: University Koblenz-Landau, Institute for Integrated Natural Sciences, Universitätsstrasse 1, 56070 Koblenz, Germany.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Imhof
keywords: crystal structure; ethanone; inter­molecular Cl⋯O inter­actions; piperidine ring; weak hydrogen bonds