title: 4-Meth-oxy-benzoyl-meso-octa-methyl-calix[2]pyrrolidino[2]pyrrole: an acyl chloride derivative of a partially reduced calix[4]pyrrole.
abstract: In the title compound, C(36)H(50)N(4)O(2), the two pyrrolidine rings have envelope conformations. The conformation of the macrocycle is stabilized by N-H⋯N hydrogen bonds and a C-H⋯N inter-action. The benzoyl ring is inclined to an adjacent pyrrole ring by 6.76 (9)°, with a centroid-to-centroid distance of 3.6285 (10) Å. In the crystal, apart from a C-H⋯O and a C-H⋯π inter-action, mol-ecules are linked via an N-H⋯O hydrogen bond, leading to the formation of helical chains propagating along [010].
authors.forename: Guillaume
authors.initials: G
authors.lastname: Journot
authors.forename: Reinhard
authors.initials: R
authors.lastname: Neier
authors.forename: Helen
authors.initials: H
authors.lastname: Stoeckli-Evans