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Compounds capable of absorbing UV-Vis radiation typically contain chromophores, which are functional groups that absorb light in this region of the electromagnetic spectrum. Examples include:
Conjugated systems: Molecules with alternating single and double bonds, like polyenes and aromatic compounds.
Transition metal complexes: These compounds often exhibit d-d transitions, which absorb visible light.
Charge transfer complexes: These involve electron transfer between donor and acceptor groups, often leading to strong absorption in the UV-Vis region.