Crystal structure of 5-oxatricyclo[5.1.0.0(1,3)]octane-4-one: two polymorphs in one crystal.

@article{Yufit2002CrystalSO,
  title={Crystal structure of 5-oxatricyclo[5.1.0.0(1,3)]octane-4-one: two polymorphs in one crystal.},
  author={Dmitry S Yufit and Sergei I. Kozhushkov and Judith A. K. Howard and Armin de Meijere},
  journal={Acta crystallographica. Section B, Structural science},
  year={2002},
  volume={58 Pt 4},
  pages={673-6}
}
Two subsets of data, corresponding to different crystalline modifications of the title compound, 5-oxatricyclo[5.1.0.0(1,3)]octane-4-one (C(7)H(8)O(2)), have been obtained from the same experiment. Both structures were successfully solved and refined. The packing of identical layers of molecules is different for monoclinic and orthorhombic forms.