Synthesis and Characterization of [Ir(Acac~(BiMs))(COD)] and [cis- Ir(Acac~(BiMs))_2(COE-OH)]

摘要

The reaction of dinuclear complex [IrCl(COD)]_2 (COD = 1,5- cyclooctadiene) with 1 equiv of 1,3-dimesitylpropane-1,3-dione (H-Acac~(BiMs)) and an excess of triethylamine in benzene or dichloromethane at room temperature results in the formation of β-diketonate complex [Ir(Acac~(BiMs))-(COD)], 1. Further, compound 1 reacts with an equivalent of H-Acac~(BiMs) in dichloromethane under atmospheric conditions to give the new complex with the formula [cis-Ir(Acac~(BiMs))_2(COE-OH)], 2 (COE-OH = σ,π-hydroxyenediyl), through a formal insertion of a hydroxyl group into a COD ring. All compounds were characterized by melting point, analytical data, and IR and NMR spectroscopy. Additionally, an X-ray crystallographic study was undertaken to corroborate the structure of both complexes.