Photorelease of Pyridyl Esters in Organometallic Ru(II) Arene Complexes
AbstractNew Ru(II) arene complexes of formula [(η6-p-cym)Ru(N-N)(X)]2+ (where p-cym = para-cymene, N-N = 2,2'-bipyrimidine (bpm) or 2,2'-bipyridine (bpy) and X = m/p-COOMe-Py, 1–4) were synthesised and characterized, including the molecular structure of complexes [(η6-p-cym)Ru(bpy)(m-COOMe-Py)]2+ (3) and [(η6-p-cym)Ru(bpy) (p-COOMe-Py)]2+ (4) by single-crystal X-ray diffraction. Complexes 1–4 are stable in the dark in aqueous solution over 48 h and photolysis studies indicate that they can photodissociate the monodentate m/p-COOMe-Py ligands selectively with yields lower than 1%. DFT and TD-DFT calculations (B3LYP/LanL2DZ/6-31G**) performed on singlet and triplet states pinpoint a low-energy triplet state as the reactive state responsible for the selective dissociation of the monodentate pyridyl ligands. View Full-Text
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Habtemariam, A.; Garino, C.; Ruggiero, E.; Alonso-de Castro, S.; Mareque-Rivas, J.C.; Salassa, L. Photorelease of Pyridyl Esters in Organometallic Ru(II) Arene Complexes. Molecules 2015, 20, 7276-7291.
Habtemariam A, Garino C, Ruggiero E, Alonso-de Castro S, Mareque-Rivas JC, Salassa L. Photorelease of Pyridyl Esters in Organometallic Ru(II) Arene Complexes. Molecules. 2015; 20(4):7276-7291.Chicago/Turabian Style
Habtemariam, Abraha; Garino, Claudio; Ruggiero, Emmanuel; Alonso-de Castro, Silvia; Mareque-Rivas, Juan C.; Salassa, Luca. 2015. "Photorelease of Pyridyl Esters in Organometallic Ru(II) Arene Complexes." Molecules 20, no. 4: 7276-7291.