Secondary isotope effect on the 19F shielding in xenon and krypton difluorides in solution

Abstract The effects of the various xenon and krypton isotopes on the nuclear shielding of 19 F in xenon and krypton difluoride in solution were studied by 19 F NMR spectroscopy. For both molecules, linear relationships were observed between the one‐bond secondary isotope shift of the 19 F nucleus, 1 Δ; 19 F( m ′/128 Xe) and 1 Δ 19 F( m ′/78 Kr), and the relative mass factor, ( m ′ − m )/ m ′, and also between the shifts and the quadratic …