362013-18-1Relevant articles and documents
Rhenium(i) and platinum(ii) complexes with diimine ligands bearing acidic phenol substituents: Hydrogen-bonding, acid-base chemistry and optical properties
Liu, Wei,Heinze, Katja
, p. 9554 - 9564 (2010)
Tricarbonylchloro-rhenium(i) (1-4) and catecholato-platinum(ii) complexes (6, 7) of diimine ligands bearing phenol and O-protected phenol substituents have been prepared and fully characterised including single crystal structure analyses of 1, 4 and 7. The redox behaviour of the catecholato platinum(ii) complexes 6 and 7 has been probed by cyclic voltammetry, preparative oxidation and EPR spectroscopy (6+, 7+). Reversible deprotonation of the hydroxy substituted complexes 1, 3 and 6 to 1-, 3- and 6- resulted in significant changes in their electronic spectra. The luminescence properties of the diamagnetic complexes have been investigated using emission spectroscopy. DFT and TD-DFT calculations were invoked to shed some light onto the geometric and electronic structures as well as the experimental spectroscopic properties of the neutral complexes 1-7, the radical cations 6+ and 7+ and the conjugate bases 1-, 3- and 6-.