Crystal structure of 2,4-Di-t-butyl-6-(3,5-di-t-butyl-2-hydroxyphenyl)-6-morpholinocyclohexa-2,4-dienone

Abstract

The crystal structure of the title compound, C₃₂H₄₉NO₃, has been determined by single-crystal X-ray diffraction at 295(1) K and refined by least squares to a residual of 0.061 for 1721 'observed' reflections. Crystals are orthorhombic, Pcab, a 18.63(2), b 18.58(2), c 18.19(2) Ǻ, Z 8. The structure determination confirms that proposed on chemical grounds and shows an unusual t-butyl N.M.R. chemical shift to be a consequence of an unusual orientation.