The Crystal Structure of Tris(2,2'-bipyridine)ruthenium(II) Perchlorate

Abstract

[Ru ( bpy )₃] (ClO₄)₂ ( bpy = 2,2′-bipyridine) crystallizes from aqueous solution in an anhydrous form as deep red tablets. A single-crystal X-ray study at 293(2) K has shown the material to be monoclinic, space group C 2/c, a 17.633(4), b 10.761(2), c 15.924(4) Ǻ, β 90.77(2)°, V 3021(1) Ǻ³, Z 4; R was 0.034 for 2405 'observed' [I > 3σ(I)] reflections. The [ Ru ( bpy )₃]²⁺ cation in the perchlorate salt shows very closely similar bond length [ Ru -N, 2.056(3)- 2.060(3)Ǻ], angle and torsion characteristics to those of the known hexafluorophosphate salt, though the two salts are not isomorphous.