title: Glycinium trichloroacetate.
abstract: The title compound, C2H6NO2+.C2Cl3O2-, crystallizes in the P4(1) space group with two glycinium cations and two trichloroacetate anions in the asymmetric unit. The glycinium cations have nearly Cs point-group symmetry which is only broken by the H atoms of the amine group. The trichloroacetate anions show typical bond lengths and angles, one of the trichloromethyl groups being disordered. Chains of alternating anions and cations run along the c axis. Within these chains, consecutive anion-cation pairs are bound via strong hydrogen bonds involving the carboxylate anions and the carboxyl or amine groups of the cations. Weaker hydrogen bonds bind neighbouring chains together.
authors.affiliation: CEMDRX, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, P-3004-516 Coimbra, Portugal. vhugo@pollux.fis.uc.pt
authors.forename: V H
authors.initials: VH
authors.lastname: Rodrigues
authors.forename: A
authors.initials: A
authors.lastname: Matos Beja
authors.forename: J A
authors.initials: JA
authors.lastname: Paixão
authors.forename: M M R R
authors.initials: MM
authors.lastname: Costa
mesh_terms: D003461:Crystallography; D005998:Glycine / Q000031:analogs & derivatives* / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D015394:Molecular Structure
chemical_list: C515543:glycinium trichloroacetate; D005998:Glycine