Dear all,
I need to calculate the value of a fluorophore. Can I use the ground state optimized geometry of the molecule to calculate the value? Also, what is the formula to calculate the total value from the x, y, and z components? Below I am attaching the input file for the calculation. Kindly let me know whether the method is correct or not.
!B3LYP 6-31G(d)
%TDDFT NROOTS 5
DOSOC TRUE
END
* xyz 0 1 a.xyz