Reversible interconversion between a nitrido complex of osmium(VI) and an ammine complex of osmium(II)

Synthesis and structure of the first molybdenum compound of N,O,N-hydroxybis(2-pyridyl)methanolato (η 3-dpkO, OH). The structure of [Mo(O)2(μ-O)(η 3-dpkO,OH)]2 · 2dmso

“…This is similar to that we reported for high-valent metal-nitrido and amido compounds [26,27]. These constraints are evident from the bond angles of coordinated atoms (see table 3 Owing to their convenient synthesis, rich physical and chemical properties, potential use in non-linear optics and molecular sensing, work is in progress by us to isolate a variety of metal compounds of polypyridyl-like ligands to explore their electro-optical properties, solid state structures and potential use as catalysts and sensors.…”

The Possible Role of Proton‐Coupled Electron Transfer (PCET) in Water Oxidation by Photosystem II

“…The site for slow exchange is presumably Mn (4 [131,132,179] Cl À was not located in the 3.5--resolution structure, but it is a cofactor for water oxidation, even though chloridedepleted samples can be reconstituted to catalytically active forms by addition of a variety of anions. [232][233][234] The results of a recent combined EPR-FTIR study are consistent with N 3 À binding in the immediate vicinity of the Mn cluster and show that Cl À binding is competitive with N 3 À binding at this site.…”

“…This step completes the loss of the first of four electrons and four protons required for water oxidation. Intra-coordination-sphere proton transfer has been demonstrated in metal complexes, [131,132,179] and there are elements that appear to promote it in the OEC. In Equation (26) …”

Terminal Nitrido and Imido Complexes of the Late Transition Metals

“…A broad range of ligands have been used to support Os(VI) nitrido species. These may be generally classified as halogen and pseudohalogen ligands, [51][52][53][54][55][56][57][58][59][60] amines, [62,63] alkoxides, [64,65] polypyridyl ligands, [66][67][68][69][70][71][72] and polyoxometallates. [73][74][75][76] Organometallic Os(VI) nitrido species are also known.…”