A novel mononuclear complex of 4,4″-azobis-(2,2′-bipyridine) coordinated to tetracyanoruthenium(II) can behave as a “molecular switch”

ABATE, PEDRO O.; POURRIEUX, GASTON; MORÁN VIEYRA, FAUSTINO E.; BORSARELLI, CLAUDIO D.; PARELLA, TEODOR; VERGARA, MÓNICA M.; KATZ, NÉSTOR E.

POLYHEDRON

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2019 vol. 174

0277-5387

A novel tetracyanoruthenium(II) complex of formula K2[Ru(4,4´´-azobpy)(CN)4], (1), with 4,4´´- azobpy = 4,4´´-azobis-(2,2´-bipyridine), has been synthesized and characterized by spectroscopic, electro- chemical and photophysical techniques. The effects of reduction and protonation of the azo group of coordinated 4,4´´-azobpy in the UV?Vis absorption and emission spectra of (1) were explored by spectro- electrochemical techniques and by addition of L-Cysteine. The behavior of (1) as a ??molecular switch? could be explained with the aid of quantum?mechanical calculations by using density functional theory.