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Intramolecular Charge Transfer in Ruthenium Complexes Ru(acac)2(ciq) with Ambidentate Camphoriminoquinone (ciq) Ligands

, , , and . Zeitschrift fuer Anorganische und Allgemeine Chemie, 647 (5): 525-533 (2021)
DOI: 10.1002/zaac.202000464

Abstract

Reaction of Ru(acac)2(MeCN)2, acac-=acetylacetonate, with N-phenylcamphoriminoquinone (pciq) or the new N-(2-thiomethylphenyl)-camphoriminoquinone (tciq) produces complexes Ru(acac)2(pciq) and Ru(acac)2(tciq) with N,O or N,S coordination and E or Z configuration at the C=N bond, resp. Oxidation state assignments in comparison with classical iminoquinone ligands are based on structural data in connection with DFT calculations Reversible oxidation yields complex ions RuIII(acac)2(pciq)+ and RuIII(acac)2(tciq)+ as characterized by EPR, IR and UV-vis-NIR spectroelectrochem.

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