In my talk I will present an overview of different ways to systematically calculate and analyze the magnetically induced current density in porphyrin based molecules. The computational approach used in my group is the gauge including magnetically induced current density method (GIMIC).[2,3] GIMIC is a independent program that is used for the calculation of magnetically induced current densities using London orbitals.[2, 3] Numerical integration of the current flow around molecular rings and along selected chemical bonds can be used for determining current pathways and the degree of aromaticity of various molecules according to the magnetic criterion.[4,5] A new feature of the GIMIC program is the calculation of the anisotropy of the magnetically induced density using gauge including atomic orbitals.[6] Very recent results obtained for various porphyrinoid molecules will be highlighted illustrating the potential and challenges of the method.[7-9]
References:
[1] D. Sundholm, H. Fliegl and R. J. F. Berger, Wiley Interdisciplinary Reviews (WIREs), 6, 639-678 (2016).
[2] J. Jus´elius, D. Sundholm and J. Gauss, J. Chem. Phys., 121, 3952-3963 (2004).
[3] H. Fliegl, S. Taubert, O. Lehtonen and D. Sundholm, Phys. Chem. Chem. Phys., 13, 20500- 20518 (2011).
[4] R. Valiev, H. Fliegl and D. Sundholm, Phys. Chem. Chem. Phys., 16, 11010-11016 (2014).
[5] H. Fliegl, F. Pichierri and D. Sundholm, J. Phys. Chem. A, 119, 2344-2350 (2015).
[6] H. Fliegl, J. Jus´elius and D. Sundholm, J. Phys. Chem. A, 120, 5658-5664, (2016).
[7] R. Valiev, H. Fliegl and D. Sundholm, J. Phys. Chem. A, 119, 1201-1207 (2015).
[8] R. Valiev, H. Fliegl and D. Sundholm, Phys. Chem. Chem. Phys., 17, 14215-14222 (2015).
[9] I. Benkyi, H. Fliegl, R. R. Valiev and D. Sundholm, Phys. Chem. Chem. Phys., 18, 11932, (2016).