title: A unique example of a high symmetry three- and four-connected hydrogen bonded 3D-network.
abstract: We present a three- and four-connected 3D-net based on 4-aminopyridine coordinated to Ag(I) and hydrogen bonded to nitrate with the unusual, high symmetry, topology (8(3))(8(6))2-tfa.
authors.affiliation: Chemistry Dept., Alexandria University, P.O. Box 426 Ibrahimia, 21321 Alexandria, Egypt. morsy5@link.net
authors.forename: Morsy A M
authors.initials: MA
authors.lastname: Abu-Youssef
authors.forename: Vratislav
authors.initials: V
authors.lastname: Langer
authors.forename: Lars
authors.initials: L
authors.lastname: Ohrström