Mar 1, 1998 · The distorted octahedral environment of Mo 5+ sites is confirmed and minimal Mo-Mo distance is evaluated from the EPR linewidth as ≈0.38 nm. At Li 2 O contents ≥20 mol%, the coordination polyhedra of Mo 5+ become better ordered though more distorted.

Nov 1, 2012 · As known, the Mo 5+ (4d 1 electron configuration) is an interesting paramagnetic probe to study the local structure by EPR spectroscopy, so we can verify the local structure parameter of [Mo 6 O 19] [N (C 4 H 9) 4] 3 by fitting EPR spectral data.

Characteristic EPR spectra of Mo5+ have been observed centered around g ≅ 2.00, which are attributed to Mo5+ ion in an octahedral coordination sphere with an axial distortion. The spectra also show strong dependence on the concentration of Li2O and B2O3.

EPR spectroscopy is used to study the nature of unpaired (paramagnetic) electrons in a given system, based on transitions between their spin states. Since electrons are charged particles, their natural spins (often denoted as +1/2 (high spin) and –½ (low spin)) generate magnetic fields.

The Mo (V) center of plant sulfite oxidase from Arabidopsis thaliana (At-SO) has been studied by continuous wave and pulsed EPR methods. Three different Mo (V) EPR signals have been observed, depending on pH and the technique used to generate the Mo (V) oxidation state.

Mar 3, 2008 · Here, we present a re-examination of the CW EPR spectroscopy of the sulfite oxidase low-pH chloride species and provide evidence for direct coordination of molybdenum by chloride.

(EPR) spectroscopy. We report that reduction to Mo(v) spedes occurred initially, but with the humic add, we observed reduction of part of the molybdenum to Mo(In). This represents

Jan 1, 2010 · The increasingly diverse cw-EPR results for SO proteins emphasized the need for the application of high-resolution pulsed EPR techniques that could provide intimate structural details for the Mo(V) centers of different organisms under various conditions.

Nov 1, 2012 · The electron paramagnetic resonance (EPR) spectral data (the g factors and hyperfine structure constants) and d–d transition spectra for the tetragonal Mo 5+ centre in [Mo 6 O 19][N(C 4 H 9) 4] 3 salt are theoretically investigated from the complete diagonalization method (CDM) for a 4d 1 ion in tetragonally compressed octahedron. The ...

FdhF from E. coli yields a strong Mo (V) EPR signal upon substrate reduction, with weak coupling to a solvent-exchangeable proton and, when 77 Se is used, strong coupling to selenium consistent...