Multielectron photoreduction of a bridged ruthenium dimer, [(phen)2Ru(tatpp)Ru(phen)2][PF6]4: aqueous reactivity and chemical and spectroelectrochemical identification of the photoproducts

Journal of the American Chemical Society
Rama KonduriFrederick M MacDonnell

Abstract

The dinuclear ruthenium(II) complex [(phen)(2)Ru(tatpp)Ru(phen)(2)][PF(6)](4) (P) (where phen is 1,10-phenanthroline and tatpp is 9,11,20,22-tetraazatetrapyrido[3,2-a:2'3'-c:3' ',2' '-l:2' ",3' "]pentacene) is shown to accept up to four electrons and two protons on the central tatpp bridging ligand via a combination of stoichiometric chemical reductions and protonations and spectroelectrochemistry (SEC) in acetonitrile. The absorption spectra of seven distinct species related by reduction and/or protonation of the central tatpp ligand were obtained and the two sequential photoproducts obtained from visible irradiation of P in acetonitrile (with 0.25 M triethylamine (TEA)) thus identified as P(-) (singly reduced, nonprotonated P) and HP(-) (doubly reduced, monoprotonated P), respectively. Importantly, the photochemical activity is maintained in mixed water-acetonitrile (1:4) solutions under basic conditions, and the protonation state of the photoproducts is readily controlled by varying the solution pH between 8 and 12. Absorption spectra obtained by SEC under similar solvent conditions were virtually identical to those obtained photochemically, and thus the doubly reduced photoproducts were identified as P(2)(-) (pH 12), HP(-) ...Continue Reading

References

Mar 28, 1996·Chemical Reviews·Vincenzo BalzaniScolastica Serroni
Dec 12, 2002·Journal of the American Chemical Society·Matthew K BrennamanJohn M Papanikolas
Jan 15, 2004·Journal of the American Chemical Society·Geoffrey PourtoisJean-Luc Brédas

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Citations

Feb 15, 2011·Chemical Communications : Chem Comm·Marie-Pierre SantoniSebastiano Campagna
Oct 22, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Shreeyukta SinghFrederick M MacDonnell
Apr 25, 2014·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ludovic Troian-Gautier, Cécile Moucheron
Apr 1, 2017·Journal of the American Chemical Society·Martin Kuss-PetermannOliver S Wenger
Jun 24, 2016·Angewandte Chemie·Margherita OraziettiOliver S Wenger
Aug 28, 2015·Physical Chemistry Chemical Physics : PCCP·Annabell G Bonn, Oliver S Wenger
Aug 10, 2018·Chemistry : a European Journal·Julia NomrowskiOliver S Wenger
Dec 13, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Keita KoshibaKen Sakai
Feb 28, 2019·Chemical Communications : Chem Comm·Andrea Pannwitz, Oliver S Wenger
Jul 2, 2010·Chemistry : a European Journal·Julien BoixelFranco Scandola
Apr 30, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Rajaa FarranJérôme Chauvin
Oct 9, 2015·Chemistry : a European Journal·Joseph M AslanFrederick M MacDonnell
Jul 25, 2019·Chemistry : a European Journal·Nicholas M RandellMurielle Chavarot-Kerlidou
Jan 31, 2018·Nanoscale·Yanling ZhaiShaojun Dong
Mar 7, 2006·Dalton Transactions : an International Journal of Inorganic Chemistry·Sascha OttOlof Johansson
Jun 1, 2016·Chemistry : a European Journal·Attila KormányosKrishnan Rajeshwar
May 10, 2017·Chemistry : a European Journal·Martin Kuss-Petermann, Oliver S Wenger
Apr 5, 2012·Faraday Discussions·Susanne KarlssonLeif Hammarström
Dec 10, 2020·Chemical Society Reviews·Christine Kranz, Maria Wächtler
Jan 4, 2008·The Journal of Physical Chemistry. a·Norma R de TacconiReynaldo O Lezna
Mar 29, 2007·Inorganic Chemistry·Thamara K JanaratneFrederick M MacDonnell
Jun 6, 2006·Inorganic Chemistry·Magnus BorgströmOlof Johansson
Feb 24, 2017·Inorganic Chemistry·Michael SkaisgirskiOliver S Wenger
Aug 25, 2020·Journal of the American Chemical Society·Martin SchulzBenjamin Dietzek

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