title: A zwitterion of 1,5-bis(2-hydroxybenzamido)-3-azapentane: a two-dimensional hydrogen-bonding network involving dimers.
abstract: The title compound, 2-{N-[2-(2-hydroxybenzamido)ethylammonioethyl]aminocarbonyl}phenolate, C18H21N3O4, crystallizes in a zwitterionic form as a result of intermolecular proton transfer and possesses a negatively charged phenolate group and a protonated amino group. The 2-hydroxybenzamide and 2-(aminocarbonyl)phenolate moieties attached to the two ends of the C-C-N-C-C backbone adopt a cis conformation in relation to this backbone. All N- and O-bound H atoms are involved in hydrogen-bond formation; the zwitterions are first linked into head-to-tail dimers, which are further organized into a two-dimensional network parallel to the crystallographic bc plane.
authors.affiliation: Department of Chemistry, Tianjin University, Tianjin 300072, People's Republic of China.
authors.forename: Hui-Min
authors.initials: HM
authors.lastname: Liu
authors.forename: Lei
authors.initials: L
authors.lastname: He
authors.forename: Xiao-Lan
authors.initials: XL
authors.lastname: Luo
authors.forename: Wen-Qin
authors.initials: WQ
authors.lastname: Zhang
mesh_terms: D001372:Aza Compounds / Q000737:chemistry*; D001549:Benzamides; D018360:Crystallography, X-Ray; D019281:Dimerization; D006860:Hydrogen Bonding; D008958:Models, Molecular; D015394:Molecular Structure; D010420:Pentanes
chemical_list: C515580:1,5-bis(2-hydroxybenzamido)-3-azapentane; D001372:Aza Compounds; D001549:Benzamides; D010420:Pentanes