title: Bis(glycylglycinium) oxalate at 100 K.
abstract: The structure of the title compound, 2C(4)H(9)N(2)O(3)(+).C(2)O(4)(2-), which has been determined by X-ray diffraction, contains discrete glycylglycine (HGly-Gly)(+) cations in general positions and oxalate anions which lie across centres of inversion. Although the geometry of the (HGly-Gly)(+) cation is not significantly different compared with other structures containing this residue, a few changes in conformation are observed which indicate the presence of molecular interactions. The molecular network in the crystal consists of one nearly linear O-H...O, five N-H...O and two weak C-H.O hydrogen bonds.
authors.affiliation: Department of Physics, Mar Ivanios College, Trivandrum 695 015, Kerala, India.
authors.forename: Isaac H
authors.initials: IH
authors.lastname: Joe
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Ejsmont
authors.forename: Jacek
authors.initials: J
authors.lastname: Zaleski
authors.forename: Victor S
authors.initials: VS
authors.lastname: Jayakumar
mesh_terms: D002412:Cations / Q000737:chemistry; D003080:Cold Temperature; D018360:Crystallography, X-Ray; D006033:Glycylglycine / Q000737:chemistry*; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D015394:Molecular Structure; D010070:Oxalates / Q000737:chemistry*
chemical_list: D002412:Cations; D010070:Oxalates; D006033:Glycylglycine