title: μ-2,2',6,6'-Tetramethyl-4,4'-bipyridine-κ2N1:N1'-bis[(diethylenetriamine-κ3N,N',N'')palladium(II)] tetranitrate.
abstract: The title compound, [Pd(2)(C(4)H(13)N(3))(2)(C(14)H(16)N(2))](NO(3))(4), comprises discrete tetracationic dumbbell-type dinuclear complex molecules and noncoordinating nitrate anions. Two Pd(dien)(2+) moieties (dien is diethylenetriamine) are joined by the rigid linear exo-bidentate bridging 2,2',6,6'-tetramethyl-4,4'-bipyridine ligand to form the dinuclear complex, which lies across a centre of inversion in the space group P2(1)/n, so that the rings in the 2,2',6,6'-tetramethyl-4,4'-bipyridine bridging ligand are parallel. In the crystal, the primary and secondary amino groups of the dien ligand act as hydrogen-bond donors towards the nitrate anions to form a three-dimensional hydrogen-bond network.
authors.affiliation: Lehrstuhl für Analytische Chemie, Universitätsstrasse 150, 44780 Bochum, Germany. ruediger.seidel@rub.de
authors.forename: Rüdiger W
authors.initials: RW
authors.lastname: Seidel
authors.forename: Iris M
authors.initials: IM
authors.lastname: Oppel