Zeitschrift für Naturforschung A · 1977 · 27 citations · 0 references
Natural SciencesChemistryMaterials ScienceInorganic ChemistryMagnetic MaterialsSpectroscopyLead ShieldingMagnetic CharacterizationMagnetic Properties Of SolidsMagnetic Resonance SpectroscopyMagnetic SusceptibilityMagnetism Of Inorganic CompoundsFourier TransformFourier Transform AnalysisLanthanide MagnetismMagnetic ShieldingNuclear Magnetic Resonance StudiesRare-earth MagnetismShielding
Abstract The NMR signals of 207 Pb have been observed in powder samples of Pb (NO 3 ) 2 , PbCO 3 , PbCrO 4 , PbMoO 4 and PbWO 4 using a Fourier transform apparatus. All the observed signals are asymmetrical, indicating anisotropics of the magnetic shielding σ 33 - σ 11 with values between - 56ppm for Pb(NO 3 ) 2 and - 884 ppm for PbCrO 4 . The principal elements of the shielding ten sors σ 11 , σ 22 , σ 33 are given relative to the Pb 2+ ion at infinite dilution in H 2 O and can be referred to the free lead atom with the known shielding constant of earlier measurements.