If you are interested in a historical perspective on [Ru(bpy)₃]²⁺, check out this recent article by Giorgio Scattolini, Andrea Rosichini and Nidhi Kaul: pubs.acs.org/doi/10.1021/...
[Ru(bpy)3]2+, tris(bipyridine)ruthenium(II), is a popular transition metal complex whose favorable photophysical properties have afforded it a central place in inorganic photochemistry and various rel...