Analysis of ESI-MS data (Fig. 6b). Molecules (ligands and Ru complexes) were assigned to the peaks by comparing the m/z found to the theoretical one calculated using ChemDraw Pro 15.0.

Molecule	m/z found	m/z calculated
Bipy	157.13	[M + H+]+ 157.07
[Ru(bipy)2(H2O)(OH)]2+	224.60	[M]2+ 224.53
[Ru(bipy)BC(OH)]2+	317.67	[M]2+ 317.57
BC	361.20	[M + H+]+ 361.17
Complex 1: [Ru(bipy)2BC]2+	387.20	[M]2+ 387.10