MRC; Magn. Reson. Chem. up to April 6, 2009
95Mo NMR: a useful tool for structural studies in solution
from Magnetic Resonance in Chemistry by José Angel Brito, Helena Teruel, Stéphane Massou, Montserrat Gómez
Oxomolybdenum(VI) complexes containing diverse ligands from an electronic and topological point of view have been analysed by means of 95Mo NMR in solution with the purpose of using this technique as a tool to study their coordination chemistry and reactivity. The relationship between the electronic density on the metal tuned by the electron-donor ability of the coordinated ligands and the 95Mo chemical shift has been proved for mono- and bimetallic complexes showing a hexa- or hepta-coordination around the metal centre. The different origins of the signal broadening (associated either to the symmetry of the metallic polyhedron or to the presence of isomers or to the ligand de-coordination) have been also considered to rationalise the obtained data. Copyright © 2009 John Wiley & Sons, Ltd.
NMR • 95Mo • chemical shift • transverse relaxation • oxomolybdenum(VI) complexes • electron-donor ligands • electron-withdrawing ligands • polydentated ligands
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