Solvatochromism and Redox Multi-Switch in a Trinuclear Cobalt(II) Complex.

ABSTRACT: A trinuclear cobalt(II) complex incorporating the redox-active hexahydroxytriphenylene (H₆HHTP) ligand was prepared and isolated in two different redox states: [Co^II ₃(sq-sq-sq)]³⁺ (1) and [Co^II ₃(cat-sq-sq)]²⁺ (2) (sq = semiquinone; cat = catecholate), enabled by its remarkable solvatochromic behavior. The ligand field tuning of the Co(II) centers through the ancillary ligand Me₃TPA (tris(6-methyl-2-pyridylmethyl)amine) allowed accessing six reversible one-electron processes instead of only three with the parent TPA ligand, therefore increasing the range of redox-coupled magnetic and optical switching in this system. Upon reduction, the three redox processes are ligand-centered and involve the three sq

SUBMITTER: Delaporte S 

PROVIDER: S-EPMC12351425 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature