title: Hydrogen bonding in 2-(hydroxymethyl)-1,3-propanediol and N,N'-bis[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]malonamide.
abstract: The molecule of 2-(hydroxymethyl)-1,3-propanediol, C(4)H(10)O(3), lies across a mirror plane in space group P2(1)/m, with disorder of both terminal hydroxyl H atoms. The molecules are linked by three O-H...O hydrogen bonds which combine to form sheets; in each O-H...O bond, the H atom resonates between the two O atoms. In the crystal structure of N,N'-bis[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]malonamide, C(11)H(22)N(2)O(8), the molecule lies about a twofold axis and has four strong hydrogen bonds which form a mixture of chains and dimers; these combine to give a three-dimensional supramolecular framework.
authors.affiliation: Departamento de Química Inorgânica, Instituto de Química, Universidade Federal do Rio de Janeiro, 21945-970 Rio de Janeiro, RJ, Brazil.
authors.forename: Christiane
authors.initials: C
authors.lastname: Fernandes
authors.forename: James L
authors.initials: JL
authors.lastname: Wardell
authors.forename: Janet M S
authors.initials: JM
authors.lastname: Skakle