Activation of water by permethyltungstenocene; evidence for the oxidative addition of water

Novel Estradiol Derivatives Labeled with Ru, W, and Co Complexes. Influence on Hormone-Receptor Affinity of Several Organometallic Groups at the 17 Position

“…Ferrocenophanes, for example, were found to be oxidized by tetrafluoroboric acid with concomitant hydrogen evolution in dichloromethane 7. Similarly, cobaltocene phosphine complexes,8 cobaltocene,9 decamethylferrocene (DMFc),6 permethyltungstenocene,10 molybdocene,11 and osmocene12 have been shown to react with acids, which in most cases are organic, and thus the H 2 evolution yield was largely dependent on the acid strength.…”

Complexes of earth-abundant metals for catalytic electrochemical hydrogen generation under aqueous conditions

“…Our laboratories have explored high-valent molybdenum complexes as a unique family of molecular motifs for catalytic hydrogen generation. Initial studies focused on metal-oxo species as reductive catalysts, inspired by the elegant water activation work of Blum and Milstein, 88 Yoon and Tyler, 89 and Bercaw and Parkin 90 as well as Toste's original hydrosilylation methodologies using oxorhenium catalysts. 91 In particular, we reasoned that this motif would provide greater catalytic stability in aqueous solutions, as any potential off-pathway reactions would ultimately funnel back to the metal-oxo species and thus return to productive catalytic cycles, akin to Nocera's ''self-healing'' catalysts for water oxidation.…”

Oxidative addition of water to transition metal complexes

“…A study by Tyler described the formation of Cp* 2 W(H)(OH) in low yield upon photolysis of Cp* 2 WH 2 (known to generate Cp* 2 W) in the presence of water. 34 Notably, Cp* 2 W(H)(OH) was not stable under the conditions of synthesis, gradually evolving into Cp* 2 WO.…”