Volume magnetic susceptibilities from nuclear magnetic resonance chemical-shift studies of heterogeneously dispersed liquids

Abstract

It is demonstrated that the measurement of n.m.r. chemical shifts for organic liquids contained first in their pure state in conventional n.m.r. sample tubes, and then dispersed heterogeneously in a reference material in the same tubes, enables the determination of their volume magnetic susceptibilities. The values so deduced correlate well with the literature values and indicate that the new method may afford a rapid method of determining magnetic susceptibilities that on average can be expected to be within 1% of the values deduced by traditional procedures.

Ambient temperature 1H/13C NMR spectra of sodium 3‐(trimethylsilyl)propane‐1‐sulfonate (DSS) in D2O referenced to external TMS: A discussion of these and closely related results. Corrections for the bulk magnetic susceptibility effect for aqueous NMR samples

“…In general, this way of finding the δ χ term is not accurate, due to the large differences in χ v data available in the literature. Great discrepancies between the classically calculated and NMR‐measured χ v values have been repeatedly reported 22,45–47 . Particularly, large discrepancies are found in the results of determining the temperature dependence of the mass χ m or the molar magnetic susceptibility χ M for H 2 O, and especially D 2 O, relevant to the present study 48–51 .…”

“…Great discrepancies between the classically calculated and NMR-measured χ v values have been repeatedly reported. 22,[45][46][47] Particularly, large discrepancies are found in the results of determining the temperature dependence of the mass χ m or the molar magnetic susceptibility χ M for H 2 O, and especially D 2 O, relevant to the present study. [48][49][50][51] This issue is critically reviewed and discussed in the Supporting Information part.…”