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. Author manuscript; available in PMC: 2014 May 7.
Published in final edited form as: Chem Commun (Camb). 2013 May 7;49(35):3617–3630. doi: 10.1039/c3cc00177f

Figure 6.

Figure 6

Four Ru(II) polypyridyl complexes studied by Tan and coworkers.35 All three complexes with β-carboline as a ligand were cytotoxic towards HeLa cells, whereas the control [Ru(phen)2(dppz)]2+ complex was not.