title: Ethyl 2-formamido-2-(4-iodobenzyl)-3-(4-iodophenyl)propionate and ethyl 2-(3-bromobenzyl)-3-(3-bromophenyl)-2-formamidopropionate.
abstract: The title compounds, C(19)H(19)I(2)NO(3) and C(19)H(19)Br(2)NO(3), are derivatives of alpha-aminoisobutyric acid with halogen substituents at the para and meta positions, respectively. The ethoxycarbonyl and formamide side chains attached to the C(alpha) atom of the molecule adopt extended and folded conformations, respectively. The crystal structures are stabilized by N-H.O, C-H.O, C-Br.O and C-I.O interactions.
authors.affiliation: Department of Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: Lakshminarasimhan
authors.initials: L
authors.lastname: Damodharan
authors.forename: Vasantha
authors.initials: V
authors.lastname: Pattabhi
authors.forename: Manoranjan
authors.initials: M
authors.lastname: Behera
authors.forename: Sambasivarao
authors.initials: S
authors.lastname: Kotha