title: Tetra-kis(μ-anthracene-9-carboxyl-ato)bis-[(anthracene-9-carboxyl-ato)(2,2'-bipyrid-yl)lanthanum(III)].
abstract: The title complex, [La(2)(C(15)H(9)O(2))(6)(C(10)H(8)N(2))(2)], has a centrosymmetric binuclear cage structure in which two La(III )atoms are both nine-coordinated and bridged by four anthracene-9-carboxyl-ate ligands, with an La⋯La separation of 4.0880 (4) Å. The remaining coordination sites are occupied by two N atoms of a 2,2'-bipyridine (bipy) and two O atoms of an anthracene-9-carboxyl-ate ligand. The six anthracene-9-carboxyl-ate groups coordinate each La(III )atom in three different ways. Adjacent discrete dinuclear units are arranged into a one-dimensional chain along the [111] direction by inter-molecular π-π stacking inter-actions, with a centroid-centroid separation of 3.704 (7) Å.
authors.forename: Chun-Sen
authors.initials: CS
authors.lastname: Liu
authors.forename: Li-Fen
authors.initials: LF
authors.lastname: Yan
authors.forename: Ze
authors.initials: Z
authors.lastname: Chang
authors.forename: Jun-Jie
authors.initials: JJ
authors.lastname: Wang