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Acta Cryst. (2013). E69, o1168  [ doi:10.1107/S1600536813017248 ]

2,6-Dimethyl-4-oxo-3-oxatricyclo[5.2.1.02,6]decane-1-carboxamide

O. Grytsai and M. Gorichko

Abstract: In the title compound, C12H17NO3, which was synthesized by Wagner-Meerwein rearrangement of the N-nitroimine, the ring-junction C-C bond length is comparatively long [1.573 (2) Å] due to a steric repulsion between the methyl groups at these atoms, which also leads to an increase in the C-C-C angles along this C4 chain [118.10 (13) and 115.04 (15) °, respectively]. In the crystal, N-H...O-C and N-H...O=C hydrogen bonds are formed between the amide group and the two O-atom acceptors of the lactone group, forming a chain along [001].


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