Figure 2

(a) Thermal ellipsoid plot at 30% probability of the single-crystal X-ray structure of 23+. H atoms are omitted. Color code: carbon, grey; nitrogen, blue; ruthenium, magenta. (b,c) Schematic representation showing the degrees of the three ∠CNC angle around the central amine atom and the dihedral angles between the central amine plane and each cyclometalating phenyl ring.