Effect of second-order spin–orbit coupling λ′ (L ·S)2 on electronic spin relaxation of paramagnetic Fe2+ in CaCO3 and CdCO3

1979 ◽  
Vol 95 (1) ◽  
pp. 259-262 ◽  
Author(s):  
K. K. P. Srivastava ◽  
H. C. Singh
Keyword(s):  
Spin Relaxation ◽  
Second Order ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Electronic Spin

A theoretical study of the 14N and 17O N.M.R. shifts in lanthanide complexes

1972 ◽  
Vol 25 (12) ◽  
pp. 2577 ◽  
Author(s):  
RM Golding ◽  
MP Halton
Keyword(s):  
Hyperfine Interaction ◽  
Lanthanide Complexes ◽  
Theoretical Study ◽  
Second Order ◽  
Orbit Coupling ◽  
Order Perturbation ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Lanthanide Ion ◽  
Isotropic Hyperfine Interaction

The experimental 14N and 17O n.m.r, results in a series of lanthanide complexes are successfully interpreted from a second-order perturbation treatment of the calculation of (S2), where bonding effects and spin-orbit coupling mixing are incorporated. The isotropic hyperfine interaction constants are shown to be negative for 14N and positive for 17O but both independent of the particular lanthanide ion. We also confirm that the 4f orbitals are not involved in direct bonding with the ligands.

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