5,10,10,15,20,20-Hexamethylcalix[4]pyrrole 5,15-diethyl diester

Abstract

In the title compound, C32H40N4O4, the pyrrole rings and ester groups adopt a 1,3-alternate conformation in which the alternating pyrrole and ester units are in opposite directions. The structure displays N—H...O hydrogen bonding and exhibits disorder [site occupancies of 0.81(2) and 0.71(2)] in the peripheral ethyl groups.