A new Ru complex capable of catalytically oxidizing water to molecular dioxygen

Cristina Sens; Isabel Romero; Montserrat Rodríguez; Antoni Llobet; Teodor Parella; Jordi Benet-Buchholz

doi:https://doi.org/10.1021/ja0486824

A new Ru complex capable of catalytically oxidizing water to molecular dioxygen

Cristina Sens, Isabel Romero, Montserrat Rodríguez, Antoni Llobet, Teodor Parella, Jordi Benet-Buchholz

Research output: Contribution to journal › Article › Research › peer-review

308 Citations (Scopus)

Abstract

We have prepared three new dinuclear ruthenium complexes having the formulas [Ru2II(bpp)(trpy)2(μ-L)]2+ (L = Cl, 1; L = AcO, 2) and [Ru2II(bpp)(trpy)2(H2O)2]3+ (3). The three complexes have been characterized through the usual spectroscopic and electrochemical techniques and, in the cases of 1 and 2, the X-ray crystal structures have been solved. In aqueous acidic solution, the acetato bridge of 2 is replaced by aqua ligands, generating the bis(aqua) complex 3 which, upon oxidation to its RuIVRuIV state, has been shown to catalytically oxidize water to molecular oxygen. The measured pseudo-first-order rate constant for the O2-evolvingprocess is 1.4 × 10-2 s-1, more than 3 times larger than the higher one previously reported for Ru-O-Ru type catalysts. This new water-splitting catalyst also has improved stability with regard to any previously described, achieving a total of 18.6 metal cycles. Copyright © 2004 American Chemical Society.

Original language	English
Pages (from-to)	7798-7799
Journal	Journal of the American Chemical Society
Volume	126
DOIs	https://doi.org/10.1021/ja0486824
Publication status	Published - 30 Jun 2004

Access to Document

https://doi.org/10.1021/ja0486824

Fingerprint Dive into the research topics of 'A new Ru complex capable of catalytically oxidizing water to molecular dioxygen'. Together they form a unique fingerprint.

Cite this

@article{0903c13c490b46ec98cb50365eef9e08,

title = "A new Ru complex capable of catalytically oxidizing water to molecular dioxygen",

abstract = "We have prepared three new dinuclear ruthenium complexes having the formulas [Ru2II(bpp)(trpy)2(μ-L)]2+ (L = Cl, 1; L = AcO, 2) and [Ru2II(bpp)(trpy)2(H2O)2]3+ (3). The three complexes have been characterized through the usual spectroscopic and electrochemical techniques and, in the cases of 1 and 2, the X-ray crystal structures have been solved. In aqueous acidic solution, the acetato bridge of 2 is replaced by aqua ligands, generating the bis(aqua) complex 3 which, upon oxidation to its RuIVRuIV state, has been shown to catalytically oxidize water to molecular oxygen. The measured pseudo-first-order rate constant for the O2-evolvingprocess is 1.4 × 10-2 s-1, more than 3 times larger than the higher one previously reported for Ru-O-Ru type catalysts. This new water-splitting catalyst also has improved stability with regard to any previously described, achieving a total of 18.6 metal cycles. Copyright {\textcopyright} 2004 American Chemical Society.",

author = "Cristina Sens and Isabel Romero and Montserrat Rodr{\'i}guez and Antoni Llobet and Teodor Parella and Jordi Benet-Buchholz",

year = "2004",

month = jun,

day = "30",

doi = "https://doi.org/10.1021/ja0486824",

language = "English",

volume = "126",

pages = "7798--7799",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

}

TY - JOUR

T1 - A new Ru complex capable of catalytically oxidizing water to molecular dioxygen

AU - Sens, Cristina

AU - Romero, Isabel

AU - Rodríguez, Montserrat

AU - Llobet, Antoni

AU - Parella, Teodor

AU - Benet-Buchholz, Jordi

PY - 2004/6/30

Y1 - 2004/6/30

N2 - We have prepared three new dinuclear ruthenium complexes having the formulas [Ru2II(bpp)(trpy)2(μ-L)]2+ (L = Cl, 1; L = AcO, 2) and [Ru2II(bpp)(trpy)2(H2O)2]3+ (3). The three complexes have been characterized through the usual spectroscopic and electrochemical techniques and, in the cases of 1 and 2, the X-ray crystal structures have been solved. In aqueous acidic solution, the acetato bridge of 2 is replaced by aqua ligands, generating the bis(aqua) complex 3 which, upon oxidation to its RuIVRuIV state, has been shown to catalytically oxidize water to molecular oxygen. The measured pseudo-first-order rate constant for the O2-evolvingprocess is 1.4 × 10-2 s-1, more than 3 times larger than the higher one previously reported for Ru-O-Ru type catalysts. This new water-splitting catalyst also has improved stability with regard to any previously described, achieving a total of 18.6 metal cycles. Copyright © 2004 American Chemical Society.

AB - We have prepared three new dinuclear ruthenium complexes having the formulas [Ru2II(bpp)(trpy)2(μ-L)]2+ (L = Cl, 1; L = AcO, 2) and [Ru2II(bpp)(trpy)2(H2O)2]3+ (3). The three complexes have been characterized through the usual spectroscopic and electrochemical techniques and, in the cases of 1 and 2, the X-ray crystal structures have been solved. In aqueous acidic solution, the acetato bridge of 2 is replaced by aqua ligands, generating the bis(aqua) complex 3 which, upon oxidation to its RuIVRuIV state, has been shown to catalytically oxidize water to molecular oxygen. The measured pseudo-first-order rate constant for the O2-evolvingprocess is 1.4 × 10-2 s-1, more than 3 times larger than the higher one previously reported for Ru-O-Ru type catalysts. This new water-splitting catalyst also has improved stability with regard to any previously described, achieving a total of 18.6 metal cycles. Copyright © 2004 American Chemical Society.

U2 - https://doi.org/10.1021/ja0486824

DO - https://doi.org/10.1021/ja0486824

M3 - Article

VL - 126

SP - 7798

EP - 7799

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

ER -