[Ru(tpy)(H4bbdip)]2+ as an anion-selective colorimetric sensor

Chemical and physical behaviour of heteroleptic 2,6-bis(1 H -benzimidazol-2-yl)pyridine and 2,2′:6′,2″-terpyridine substituted tricyclophosphazene ruthenium(II) complexes

“…In the present investigation, heteroleptic complexes of ruthenium(II) containing both bbp and tpy moieties are studied. One of the key features of Ru(bbp)(tpy) complexes is that the imidazole groups are very versatile and when protonated, they act as strong hydrogen bonding sites capable of detecting anions [7][8][9][10][11]. They can react with bases to form the dianionic ligand [12][13][14][15], or N-alkylation provides a route to more complex ligands [16][17][18].…”