title: N,N'-Propylenedioxybis(2,4,6-trimethylbenzenesulfonamide): molecules of unexpected conformation form a molecular ladder built from two independent N-H...O=S hydrogen bonds.
abstract: Molecules of the title compound, C(21)H(30)N(2)O(6)S(2), adopt a skeletal conformation which does not possess even approximate internal symmetry. The molecules are linked by two N-H...O=S hydrogen bonds [H...O = 1.97 A (x2), N...O = 2.865 (2) and 2.864 (2) A, and N-H...O = 160 and 159 degrees] into molecular ladders, alternatively described as chains of edge-fused R(2)(2)(20) rings.
authors.affiliation: Departamento de Química Inorgânica, Instituto de Química, Universidade Federal Fluminense, 24020-150 Niterói, Rio de Janeiro, RJ, Brazil.
authors.forename: Solange M S V
authors.initials: SM
authors.lastname: Wardell
authors.forename: Marcus V D
authors.initials: MV
authors.lastname: Rangel e Silva
authors.forename: Patricia F
authors.initials: PF
authors.lastname: Prado
authors.forename: John N
authors.initials: JN
authors.lastname: Low
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell