title: meso-N,N'-oxalyldivaline.
abstract: The title compound, 2,2'-(oxalyldiimino)bis(3-methylbutanoic acid), C12H20N2O6, possesses a centre of symmetry. In the crystal, molecules are connected by hydrogen bonds between oxamide and carboxyl groups, similar to the pattern of the monoclinic forms of HO-Gly-CO-CO-Gly-OH and HO-Aib-CO-CO-Aib-OH (Gly is glycine and Aib is 2-aminoisobutyric acid). The characteristic torsion angles in the title compound are close to those in peptide alpha-helices.
authors.affiliation: Rudjer Bosković Institute, PO Box 180, HR-10002 Zagreb, Croatia. bperic@rudjer.irb.hr
authors.forename: B
authors.initials: B
authors.lastname: Perić
authors.forename: B
authors.initials: B
authors.lastname: Kojić-Prodić
authors.forename: J
authors.initials: J
authors.lastname: Makarević
authors.forename: M
authors.initials: M
authors.lastname: Jokić
authors.forename: M
authors.initials: M
authors.lastname: Zinić