title: (+/-)-6-tert-butyl-8-hydroxymethyl-2-phenyl-4H-1,3-benzodioxin and 2,2,2',2',6,6'-hexamethyl-8,8'-methylenebis(4H-1,3-benzodioxin).
abstract: Two compounds containing 1,3-benzodioxin groups are reported, namely (+/-)-6-tert-butyl-8-hydroxymethyl-2-phenyl-4H-1,3-benzodioxin, C(19)H(22)O(3), (I), and 2,2,2',2',6,6'-hexamethyl-8,8'-methylenebis(4H-1,3-benzodioxin), C(23)H(28)O(4), (II). The hydroxy groups of neighbouring molecules in (I) are hydrogen bonded to each other, giving rise to double-row chains. The molecule in (II) adopts a 'butterfly' conformation, with the O atoms in distal positions. In both compounds, the dioxin rings are in distorted half-chair conformations.
authors.affiliation: Dipartimento di Chimica, Università 'La Sapienza', Box 34, Roma 62, P le Aldo Moro 5, 00185 Roma, Italy.
authors.forename: Bernardo
authors.initials: B
authors.lastname: Masci
authors.forename: Stefano
authors.initials: S
authors.lastname: Levi Mortera
authors.forename: Maurizio
authors.initials: M
authors.lastname: Varrone
authors.forename: Pierre
authors.initials: P
authors.lastname: Thuéry