51V magic angle spinning NMR in VOPO4 phases.
51V magic angle spinning NMR was applied to the alpha(II), beta and gamma phases of VOPO4 at three magnetic field strengths (4.7, 7.1, and 11.7 T). The 51V quadrupole and chemical shift tensors were determined by iterative fitting of the NMR lineshapes at the three magnetic field strengths. The applicability of the method is illustrated by comparison with literature data. Although determined chemical shift tensors are completely axially symmetric and of the same magnitude, all studied phases can clearly be distinguished by their quadrupole coupling tensor. Relationships between the 51V NMR data and structural characteristics such as crystal symmetries are discussed.
Siegel
Renée
R
Institut de Chimie, FRE 2446 CNRS, Université Louis Pasteur, BP 296, 67008 Strasbourg Cedex, France.
Dupré
Nicolas
N
Quarton
Michel
M
Hirschinger
Jérôme
J
D003461:Crystallography / Q000379:methods; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D010710:Phosphates / Q000737:chemistry*; D013237:Stereoisomerism; D017968:Vanadium Compounds / Q000737:chemistry*
D010710:Phosphates; D017968:Vanadium Compounds