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The photochemical behaviour of some mixed ligand chromium(III) complexes with amino acids, [Cr(C 2 O 4 ) 2 (Aa)] n− (where Aa=alanine, valine, serine, cysteine, asparagine, aspartic acid) was studied. The attention was focused on the photoredox mode, which proceeded via inner- or intramolecular pathway yielding Cr(II) species and hydrated electrons, respectively. The...
Irradiation of chromium(III) complexes with oxalate and pyridinedicarboxylate ligands (pda=2,3-, 2,4-, or 2,5-dicarboxylate) leads to diverse behaviors, dictated by light energy, presence of oxygen and the ligand nature. Irradiation within the MC bands is unaffected by O 2 and results in ligand substitution. The LMCT excitation is effective only when oxalate is coordinated to Cr(III); then...
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