Benzothiazole and benzoxazole promoted cleavage of Ru-C(aryl) bond in a four-membered ortho-metalated Ruthenium(II) organometallics

Autor: Jagannath Chowdhury, Mrinal Kanti Ghosh, Purnananda Garu, Swarup Chattopadhyay
Rok vydání: 2022
Předmět:
DOI: 10.21203/rs.3.rs-2254728/v1
Popis: The four-membered ruthenium(II) organometallics Ru(η2-RL)(PPh3)2(CO)(Cl) (1) where η2-RL = C6H2O-2-CHNHC6H4R(p)-3-Me-5 and R = CH3 reacts with 2-(2-hydroxyphenyl)benzothiazole (Hhpbt) and 2-(2-hydroxyphenyl)benzoxazole (Hhpbo) in refluxing ethanol to afford Ru(PPh3)2(CO)(hpbt)Cl (2) and Ru(PPh3)2(CO)(hpbo)Cl (3) respectively in excellent yield. In the course of these reactions the Ru-C(aryl) bond in 1 is cleaved and the RL ligand is no longer coordinated with the metal center in the products. The spectral (UV-vis, IR, 1H NMR) and electrochemical data of the complexes are reported. The identity of complex 2 has been established by single-crystal X–ray structure determination. The electronic structure and the absorption spectra of the complexes are scrutinized by DFT and TD-DFT analyses.
Databáze: OpenAIRE