Cobalt complexes, absorption charge transfer transitions

The solid-state spectrum in dry lithium fluoride is similar to the solution spectrum, indicating that no structural transformation has occurred in solution. However, weak shoulders or bands around 14,500 and 7700 cm" (Fig. 2) are observed. The absorption maxima around 27,000 cm is attributed to charge transfer transition, as it appears in all complexes of both cobalt(II) and nickel(II) with this ligand. 

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