title: 6-[6-(Pyridin-2-yl)-1,2,4,5-tetra-zin-3-yl]pyridin-3-amine monohydrate.
abstract: The packing of the title compound, C12H9N7·H2O, is dominated by hydrogen bonding and π-stacking. Layers parallel to [010] are established by hydrogen bonds involving all amine donor functions and one of the water donor functions, while the remaining water donor function enables the stacking of the layers along [10-1], which is accompanied by π-stacking. In the molecule, the plane of the central tetra-zine ring forms angles of 5.33 (7) and 19.84 (8)° with the adjacent 3-amine-pyridine and pyridine rings, respectively.
authors.affiliation: Ludwig-Maximilians-Universität, Department, Butenandtstrasse 5-13, 81377 München, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: Broichhagen
authors.affiliation: Ludwig-Maximilians-Universität, Department, Butenandtstrasse 5-13, 81377 München, Germany.
authors.forename: Yvonne E
authors.initials: YE
authors.lastname: Klingl
authors.affiliation: Ludwig-Maximilians-Universität, Department, Butenandtstrasse 5-13, 81377 München, Germany.
authors.forename: Dirk
authors.initials: D
authors.lastname: Trauner
authors.affiliation: Ludwig-Maximilians-Universität, Department, Butenandtstrasse 5-13, 81377 München, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Mayer
keywords: asymmetric tetra­zines; crystal structure; graph sets; hydrogen bonding