Abstract

We consider calculation of induced currents of π-electrons over the molecular network when molecules are placed in a magnetic field. The approach is based on consideration of current contributions arising from conjugated circuits within each individual Kekulé valence structure. The calculation is illustrated for an isomer of coronene C 24H 12 for which ab initio computations of π-electron current densities are available. Agreement is found between the quantum chemical ab initio computations that make no assumptions on ring contributions and the graph theoretical models based on conjugated circuit currents.

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