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. 2023 Apr 15;28(4):403–420. doi: 10.1007/s00775-023-01998-z

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© The Author(s) 2023

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Fig. 3 — ¹H NMR spectra of complex 2 in CD₃CN before irradiation (top), after 5 min of 1050–430 nm irradiation (middle) and 2 h of irradiation (bottom). The peaks marked with a green asterisk correspond to coordinated Bndpa, and those with a blue asterisk to free Bndpa. The peaks marked with a red diamond are ascribed to [Ru(phen)₂(CH₃CN)₂]²⁺ [33]. The peaks marked with an orange asterisk (within the orange dotted box) are associated to the putative intermediate species