Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 4 (April 2013)


organic compounds



bx2436 scheme

Acta Cryst. (2013). E69, o567-o568    [ doi:10.1107/S1600536813007265 ]

N-Butoxycarbonyl-5-oxo-L-proline ethyl ester

P. Rajalakshmi, N. Srinivasan, R. V. Krishnakumar, I. A. Razak and M. M. Rosli

Abstract: The molecular structure of the title compound, C12H19NO5, may be visualized as made up of two nearly perpendicular planes [dihedral angle = 87.39 (12)°] and its crystal structure is a good example of C-H...O interactions assuming significance in optimizing supramolecular aggregation in crystals in a molecule which is severely imbalanced in terms of donors to acceptor atoms. The pyrrolidine ring adopts a (3T2) twist conformation with puckering parameters Q = 0.2630 (4) Å and [varphi] = 59 (9)°. The crystal structure features R24(10) and R34(26) ring motifs formed by four weak C-H...O interactions, leading to supramolecular sheets lying parallel to the bc plane.


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