Received 19 November 2008
In the title compound, [Ru(C10H8N2)2(C21H18N4O4)](PF6)2, the RuII complex cation reveals a slightly distorted octahedral 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-HF interactions.
For related literature, see: Gillaizeau-Gauthier et al. (2001); Ozawa & Sakai (2007); Ozawa et al. (2006, 2007); Sakai & Ozawa (2007); Sakai et al. (1993). For discussion of attractive interactions between negatively-charged atoms and alpha C atoms from heterocyclic rings, see: Schottel et al. (2008).
Data collection: APEX2 (Bruker, 2006); cell refinement: APEX2; data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: KENX (Sakai, 2004); software used to prepare material for publication: SHELXL97, TEXSAN (Molecular Structure Corporation, 2001), KENX and ORTEPII (Johnson, 1976).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: KP2198 ).
This work was in part supported by a Grant-in-Aid for Scientific Research (A) (No. 17205008), a Grant-in-Aid for Specially Promoted Research (No. 18002016), and a Grant-in-Aid for the Global COE Program (`Science for Future Molecular Systems') from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
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