Nuclear magnetic shielding spin-rotation interaction

NUCLEAR MAGNETIC SHIELDING, NUCLEAR SPIN-ROTATION INTERACTIONS, AND THE MOLECULAR ZEEMAN EFFECT IN THE PRESENCE OF NUCLEAR INTERACTIONS... 

We have just examined the rotational-electronic interaction and the external field-electronic interaction with the resultant rotational Hamiltonian in Eq. (6), which is valid in the absence of nuclear-electronic interactions. We now add in the effects of the nuclear-electronic interactions that give rise to the spin-rotation interaction and nuclear magnetic shielding. 

Spin-rotation and spin-spin interaction constants, rotational -values, susceptibility anisotropies, nuclear magnetic shielding, and related parameters... 

This table contains the data obtained from the magnetic hyperfine structure and the Zeeman effect for molecules in a Z state or more generally in a state with Q = 0, i.e., the projection of the angular momentum onto the molecular axis is zero. For the magnetic hyperfine stracture one usually considers four terms the spin-rotation interaction for each nucleus and the scalar and tensorial spin-spin interaction of the two nuclear spins. For the Zeeman effect one takes into account the rotational Zeeman effect, the nuclear Zeeman effect with the scalar and tensorial shielding, and the scalar and tensorial magnetic susceptibility. The hamiltonian of these interactions can be written with the concept of spherical tensor operators [57Edm]... 

Cl, C2, C3, C4 iS) 2S> 1Tj 2T Cl, Cj spin-rotation constants of molecule AB for nucleus A and B, respectively C3 tensorial part of the nuclear spin-spin interaction C4 scalar part of the nuclear spin-spin interaction scalar and tensorial parts of the magnetic shielding of the magnetic moment of nucleus A and B, respectively... 

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