95Mo and 97Mo Fourier transform NMR studies of several alkali molybdate solutions in H2O and D2O are reported. The Larmor frequency of the molybdenum nuclides is remarkably dependent on the solute and the solvent.
In potassium molybdate the chemical shifts of 39K were observed. The ratio of the Larmor frequencies of 95Mo and 39K was measured with high accuracy in a 2.6 molal solution of K2MoO4 in H2O. From this value a nuclear magnetic moment of 95Mo and 97Mo in the molybdate ion was derived using the concentration dependencies of the Larmor frequencies of 39K and 95Mo and the ratio of the Larmor frequencies of 97Mo and 95Mo.
In solid Ag2MoO4 and metallic molybdenum the 95Mo and 97Mo NMR signals were detected; line widths and shifts are given.
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