title: 4,4'-Trimethylenedipyridinium bis[carboxymethylphosphonate(1-)]: a three-dimensional framework structure built from O-H...O, N-H...O and C-H...O hydrogen bonds.
abstract: In the title compound, C(13)H(16)N(2)(2+).2C(2)H(4)O(5)P(-), the cation lies across a twofold rotation axis in space group Fdd2. The anions are linked into molecular ladders by two O-H.O hydrogen bonds [H.O = 1.73 and 1.77 A, O.O = 2.538 (2) and 2.598 (3) A, and O-H.O = 160 and 170 degrees ], these ladders are linked into sheets by a single type of N-H.O hydrogen bond [H.O = 1.75 A, N.O = 2.624 (3) A and N-H.O = 171 degrees ] and the sheets are linked into a three-dimensional framework by a single type of C-H.O hydrogen bond [H.O = 2.48 A, C.O = 3.419 (4) A and C-H.O = 167 degrees ].
authors.affiliation: School of Chemistry, University of St Andrews, Fife KY16 9ST, Scotland.
authors.forename: Katharine F
authors.initials: KF
authors.lastname: Bowes
authors.forename: George
authors.initials: G
authors.lastname: Ferguson
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Lough
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell