title: Crystal structure of [UO2(NH3)5]NO3·NH3.
abstract: Penta-ammine dioxide uranium(V) nitrate ammonia (1/1), [UO2(NH3)5]NO3·NH3, was obtained in the form of yellow crystals from the reaction of caesium uranyl nitrate, Cs[UO2(NO3)3], and uranium tetra-fluoride, UF4, in dry liquid ammonia. The [UO2]+cation is coordinated by five ammine ligands. The resulting [UO2(NH3)5] coordination polyhedron is best described as a penta-gonal bipyramid with the O atoms forming the apices. In the crystal, numerous N-H⋯N and N-H⋯O hydrogen bonds are present between the cation, anion and solvent mol-ecules, leading to a three-dimensional network.
authors.affiliation: Anorganische Chemie, Fluorchemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany.
authors.forename: Patrick
authors.initials: P
authors.lastname: Woidy
authors.affiliation: Anorganische Chemie, Fluorchemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany.
authors.forename: Florian
authors.initials: F
authors.lastname: Kraus
keywords: ammonia; crystal structure; hydrogen bonding; nitrate; uranium(V)