Sum-over-States Expression for Diamagnetic Terms

Lazzeretti et al, 1994) as a sum-over-states or linear response functions that will be denoted with a superscript A  

In order to prove this for all three properties we start by rewriting the operators of the diamagnetic terms as 

Exercise 5.9 Prove that the operators for the diamagnetic contributions to the magneti-zability, nuclear magnetic shielding and reduced indirect nuclear spin-spin coupling tensors can be written as the commutator given in Eq. (5.103). 

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