𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the Ligand-to-Metal Charge-Transfer Photochemistry of the Copper(II) Complexes of Quercetin and Rutin

✍ Scribed by Simonet Torres; Guillermo Ferraudi; Maria Jesus Aguirre; Mauricio Isaacs; Betty Matsuhiro; Nancy P. Chandía; Leonora Mendoza

Publisher
John Wiley and Sons
Year
2011
Tongue
German
Weight
277 KB
Volume
94
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

In contrast to the UV-photoinduced ligand photoionization of the flavonoid complexes of Fe III , redox reactions initiated in ligand-to-metal charge-transfer excited states were observed on irradiation of the quercetin (1) and rutin (2) complexes of Cu II . Solutions of complexes with stoichiometries [

were flash-irradiated at 351 nm. Transient spectra observed in these experiments showed the formation of radical ligands corresponding to the one-electron oxidation of L and the reduction of Cu II to Cu I . The radical ligands remained coordinated to the Cu I centers, and the substitution reactions replacing them by solvent occurred with lifetimes t < 350 ns. These are lifetimes shorter than the known lifetimes (t > 1 ms) of the quercetin and rutin radicals decay.

📜 SIMILAR VOLUMES

ChemInform Abstract: Metal—CO Photodisso
ChemInform Abstract: Metal—CO Photodissociation in Transition Metal Complexes: The Role of Ligand-Field and Charge-Transfer Excited States in the Photochemical Dissociation of Metal—Ligand Bonds
✍ E. J. Baerends; A. Rosa 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 25 KB 👁 2 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v