Synthesis and properties of a novel ruthenium complex containing a 2-(benzimidazol-2-yl)-8-octyloxyquinoline tridentate ligand

A new Ru(II) complex, [Ru(II)(bpy)2BIOQ][PF6]2, has been synthesized with bpy (bpy = 2,2′-bipyridine) as the first ligand and 2-(benzimidazol-2-yl)-8-octyloxyquinoline (BIOQ) as the second ligand. The Ru(II) complex features high thermal stability with a melting point of 299–300 °C and a decomposition temperature of 299 °C (onset). The photoluminescence spectrum of the complex in solid state exhibits a strong emission band at 450 nm.