title: Bis(2,2'-bipyridine){ethyl 4'-[N-(4-carbamoylphen-yl)carbamo-yl]-2,2'-bi-pyridine-4-carboxyl-ate}ruthenium(II) bis-[hexa-fluorido-phosphate(V)].
abstract: In the title compound, [Ru(C(10)H(8)N(2))(2)(C(21)H(18)N(4)O(4))](PF(6))(2), the Ru(II) complex cation reveals a slightly distorted octa-hedral coordination. The coordination bonds of the 4,4'-substituted bipyridyl donors [Ru-N = 2.038 (3) and 2.051 (3) Å] are shorter than those of the 2,2'-bipyridyl donors [Ru-N1 = 2.065 (3)-2.077 (3) Å], due to the electron-withdrawing effects of the substituents at the 4,4'-positions. The angles between the pyridyl planes of the three bipyridyl ligands are 1.5 (2), 6.3 (3) and 8.7 (2)°, respectively. The cations are connected by anions via N-H⋯F inter-actions.
authors.affiliation: Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan.
authors.forename: Masanari
authors.initials: M
authors.lastname: Hirahara
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Masaoka
authors.forename: Ken
authors.initials: K
authors.lastname: Sakai