Structure, photophysics, electrochemistry and DFT calculations of [RuH(CO)(PPh3)2(coumarinyl-azo-imidazole)]
作者:Papia Datta、Dibakar Sardar、Rajat Saha、Tapan Kumar Mondal、Chittaranjan Sinha
DOI:10.1016/j.poly.2013.01.041
日期:2013.4
2-(Coumarinyl-6-azo)-4-R-imidazole (4-R-LH, 1) and 4-(coumarinyl-6-azo)-5-R-imidazole (5-R-LH, 2) (R = H, Me, Ph) are two classes of -N=N-C=N- ligands used to synthesize [RuH(CO)(PPh3)(2)(4-R-L)] (3) and [RuH(CO)(PPh3)(2)(5-R-LH)Cl] (4). The characterization of the complexes has been done by elemental analysis and spectroscopic methods, and X-ray characterization is reported for one representative complex. The redox properties of the complexes were studied by cyclic voltammetry. They are emissive at room temperature. DFT and time dependent-DFT calculations were performed to explain the electronic structure, spectral and redox properties of the complexes. (C) 2013 Elsevier Ltd. All rights reserved.