Fourier-Kernresonanzuntersuchungen an ¹⁰ B und ¹¹ B in wäßriger Lösung / Fourier Transform NMR Studies of ¹⁰ B and ¹¹ B in Aqueous Solutions

Abstract

The ratios of the Larmor frequencies of 10 B and 2 H and of n B and 10 B have been measured with the NMR method and a magnetic moment has been calculated for 10 B in the B (OH) 4~-ion. For this, an investigation of the dependence of the NMR signals of 10 B and 2 H on the concentration of some boron salts in solutions of H20 and D20 was necessary. Using hyperfine interaction constants from literature, the hyperfine structure anomaly 10 /1 11 of boron in the 2 P1/2 atomic ground state has been calculated. A difference in the magnetic shielding between the isotopes 10 B and n B in different compounds could not be detected.