Crystal Structures of 8-Oxa-6-azabicyclo[3.2.1]octan-7-one and the 4(e)-Bromo-substituted Derivative
- 1 July 1986
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 59 (7) , 2085-2088
- https://doi.org/10.1246/bcsj.59.2085
Abstract
The crystal structures of the bicyclic oxalactam, 8-oxa-6-azabicyclo[3.2.1]octan-7-one(BOL) and the 4(e)-bromo-substituted derivative(Br–BOL) were determined by the X-ray diffraction method. Crystal data: (BOL) P212121, a=10.926(3), b=9.115(2), c=6.280(2), Å, Z=4; (Br–BOL) P212121, a=10.708(3), b=11.053(3), c=6.208(2), Å, Z=4. Refinements were carried out by the full-matrix least-squares method. R values are; (BOL) 0.050 for 601 reflections, (Br–BOL) 0.028 for 866 reflections. Both structures are quite similar to each other. The packing scheme of BOL is essentially the same as that of Br–BOL. Molecules are linked by N–H···O hydrogen bonds around a two-fold screw axis, giving rise to infinite chains extended along the c axis.Keywords
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