Steric hindrance, ligand ejection and associated photocytotoxic properties of ruthenium(II) polypyridyl complexes.

ABSTRACT: Two ruthenium(II) polypyridyl complexes were prepared with the {Ru(phen)₂}²⁺ moiety and a third sterically non-hindering bidentate ligand, namely 2,2'-dipyridylamine (dpa) and N-benzyl-2,2'-dipyridylamine (Bndpa). Hence, complexes [Ru(phen)₂(dpa)](PF₆)₂ (1) and [Ru(phen)₂(Bndpa)](PF₆)₂ (2) were characterized and their photochemical behaviour in solution (acetonitrile and water) was subsequently investigated. Compounds 1 and 2, which do not exhibit notably distorted octahedral coordination environments, contrarily to the homoleptic "parent" compound [Ru(phen)₃](PF₆)₂, experience two-step photoejection of the dpa and Bndpa ligand upon irradiation (1050-430 nm) for several

SUBMITTER: Herrera-Ramirez P 

PROVIDER: S-EPMC10149480 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature