title: Bis(2,2'-bipyridine-κ(2)N,N')tris-(nitrato-κ(2)O,O')erbium(III).
abstract: The asymmetric unit of the title compound, [Er(NO(3))(3)(C(10)H(8)N(2))(2)], contains one-half mol-ecule situated on a twofold rotation axis. The Er(III) ion is in a tenfold coordination by six O atoms from three NO(3) (-) anions and four N atoms from two 2,2'-bipyridine ligands in a distorted bicapped dodeca-hedral geometry. In the crystal, weak C-H⋯O hydrogen bonds hold the mol-ecules together.
authors.affiliation: College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000,  People's Republic of China.
authors.forename: Hua
authors.initials: H
authors.lastname: Yang