Concurrent 19F and 77Se or 19F and 125Te NMR T1 measurements for determination of 77Se and 125Te absolute shielding scales

Abstract 77 Se and 125 Te absolute nuclear shieldings in SeF 6 and TeF 6 are determined from simultaneous T 1 measurements of 77 Se and 19 F (and 125 Te and 19 F) in the gas phase.

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