Abstract
The combination of molecular beam data on spin-rotational interactions in molecules with chemical shift data has been used to calculate the paramagnetic part of the nuclear magnetic shielding constant for F in HF and . With the assumption of the sign of the spin-rotational constant in as positive (i.e., a net negative rotational magnetic field at the nitrogen nucleus), the paramagnetic part of the nuclear magnetic shielding constant in has been calculated. The results, when combined with reliable calculations of the diamagnetic part of the shielding constant, yield the total shielding constants. These are found to be: F in , F in , N in , and demonstrate the phenomenon of nuclear magnetic antishielding in and , as well as in other compounds. Use of these shielding constants permits considerable improvement in the estimates of the bare nuclear magnetic moments of fluorine and nitrogen. The results are nm, nm, nm.
- Received 28 October 1963
DOI:https://doi.org/10.1103/PhysRev.133.A1533
©1964 American Physical Society