Speaker
Description
Accurate NMR shielding constants for arsenic (As) and antimony (Sb) in the AsF$_6^{-}$, AsO$_4^{3-}$, SbCl$_6^{-}$, and SbF$_6^{-}$ complexes were calculated using both non-relativistic coupled cluster methods and relativistic four-component density functional theory (DFT). The magnetic dipole moments of the $^{75}$As, $^{121}$Sb, and $^{123}$Sb nuclei were redetermined, leading to revised recommended reference values. The updated nuclear magnetic dipole moments are $\mu$($^{75}$As) = 1.43711(4) $\mu_N$, $\mu$($^{121}$Sb) = 3.35540(33) $\mu_N$, and $\mu$($^{123}$Sb) = 2.54389(25) $\mu_N$, correcting previous systematic errors of up to 0.008 $\mu_N$ in earlier reference data. These magnetic dipole moments provide reliable references in nuclear physics, becoming the reference for magnetic moments in isotopic series of radioactive/exotic nuclei.
