Hexacyclo[7.5.1.01,6.06,13.08,12.010,14]pentadecane-7,15-dione

Abstract

The structure of the title cage compound, C15H16O2, comprises eight fused rings, viz. one four-membered, four five-membered and three six-membered. One of the internal C—C bonds is unusually long for a cyclobutane bond length [1.607 (3) Å] and is comparable with the equivalent value of 1.598 (4) Å in the unsaturated homolog hexacyclo[7.4.2.01,9.03,7.04,14.06,15]pentadeca-10,12-diene-2,8-dione.

Keywords

• Cage molecule
• crystal structure
• hexacyclic dione
• unusual C—C bond length