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. 2002 Sep;58(Pt 9):o560-2.
doi: 10.1107/s0108270102013665. Epub 2002 Aug 21.

2,3-Dihydro-3,3-dimethylspiro[1H-4-oxanthracene-5,2'-oxiran]-10(5H)-one

Vitor F Ferreira  1 , Antonio V Pinto, Maria C R F Pinto, Milton N da Silva, Janet M S Skakle, Maria C B V de Souza, Solange M S V Wardell
Affiliations

2,3-Dihydro-3,3-dimethylspiro[1H-4-oxanthracene-5,2'-oxiran]-10(5H)-one

Vitor F Ferreira et al. Acta Crystallogr C. 2002 Sep.

Abstract

The central six-membered ring in the title compound, C(16)H(16)O(3), is almost planar (and almost coplanar with the aromatic ring), despite one of its C atoms being formally sp(3) hybridized. The planarity is a consequence of the C atom at the centre of the spirocyclic system also being part of the three-membered epoxide ring. The molecules are linked by pi-pi and C-H.pi interactions.

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