Azobenzene-based ruthenium( ii ) catalysts for light-controlled hydrogen generation - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Dalton Transactions Year : 2017

Azobenzene-based ruthenium( ii ) catalysts for light-controlled hydrogen generation

Abstract

Eight new ruthenium(II) half-sandwich complexes containing azobenzene-appended pyridine (1), bipyridine (2–5) and phosphine (6 and 7) ligands have been synthesized and fully characterized. UV-vis spectroscopic studies showed that the trans-to-cis photoisomerization was strongly inhibited upon coordination to the metal centre in azopyridine-derived ligands 1 and 2, but it remained efficient in azobenzene-appended bipyridine (3–5) and phosphine (6 and 7) ligands. The complexes were tested as precatalysts for photo-controlled hydrogen generation by hydrolytic decomposition of ammonia-borane (AB). In situ irradiation of the reaction mixtures of compounds [Ru(p-Cym)(6)Cl]Cl and [Ru(p-Cym)(7)Cl]Cl induced a clear change in the catalytic reaction rate, serving as a proof of concept for light-controlled hydrogen generation.
No file

Dates and versions

hal-02007742 , version 1 (05-02-2019)

Identifiers

  • HAL Id : hal-02007742 , version 1

Cite

A. Telleria, Piet W. N. M. van Leeuwen, Z. Freixa. Azobenzene-based ruthenium( ii ) catalysts for light-controlled hydrogen generation. Dalton Transactions, 2017, 46 (11), pp.3569-3578. ⟨hal-02007742⟩
27 View
0 Download

Share

Gmail Mastodon Facebook X LinkedIn More