7,11,15,28-Tetra-bromo-1,21,23,25-tetra-phenethyl-resorcin[4]arene cavitand-acetone-chloro-form (1/1.31/0.69) at 173 K.

The crystal structure of the title compound, C64H52Br4O8·1.31C3H6O·0.69CHCl3, is described. The structure has been reported previously [Bryant, Blanda, Vincenti & Cram (1991). J. Am. Chem. Soc. 113, 2167–2172]; however, the lower data acquisition temperature results in an improved refinement model. In addition, the presence of residual acetone and (disordered) chloro­form within the mol­ecular structure of the title compound represents a new clathrate of the title compound. One half of the resorcin[4]arene cavitand mol­ecule appears in the asymmetric unit; the complete resorcin[4]arene cavitand structure was generated across a mirror plane.