title: Oxygen versus nitrogen interactions in lithium dinitramidate dihydrate and pyridinium dinitramidate.
abstract: The title compounds, diaquadinitramidatolithium(I), [Li(N3O4)(H2O)2], (I), and pyridinium dinitramidate, C5H6N+ x N3O4(-), (II), differ significantly in their cation-anion contacts. The Li+ atom of (I) is coordinated by two O atoms of the dinitramide anion in a chelate and by four additional water molecules, with the Li and central N atom of the anion on a twofold rotation axis. The pyridinium cation of (II) exhibits a contact with the dinitramide anion via an intermolecular N-H...N hydrogen bridge. These interactions are compared with those found in reported anhydrous lithium dinitramide and ammonium dinitramide salts.
authors.affiliation: Department of Chemistry and Biochemistry, Ludwig-Maximilian University, Butenandtstrasse 5-13, D-81377 Munich, Germany. tmk@cup.uni-muenchen.de
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Klapötke
authors.forename: Burkhard
authors.initials: B
authors.lastname: Krumm
authors.forename: Matthias
authors.initials: M
authors.lastname: Scherr