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 -
