(Bipyridine)(terpyridine)(4-iodophenylcyanamide)ruthenium(II) complex: crystallography, electronic absorption spectroscopy, cyclic voltammetry and EPR measurements

✍ Scribed by Elodie Sondaz; André Gourdon; Jean-Pierre Launay; Jacques Bonvoisin

• Book ID: 104138492
• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 210 KB
• Volume: 316
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(01)00382-6

✦ Synopsis

The complex [Ru(bpy)(tpy)(Ipcyd)] + (where bpy: 2,2%-bipyridine, tpy: 2,2%:6%,2%%-terpyridine and Ipcyd: 4-iodophenylcyanamide anion) has been synthesized. An extensive characterization was carried out using IR, 1 H and 13 C NMR, ES-MS, UV-Vis, electrochemistry, EPR and X-ray single crystal diffraction analysis. Cyclic voltammogram shows an irreversible anodic peak around 0.7 V/ECS, the shape of the wave is typical of an electrochemical-chemical (EC) mechanism with an half-life time in the order of seconds for the generated species. Oxidation of the title compound has been investigated in order to explore its ability as a magnetic probe for further electronic studies on dinuclear complexes. The EPR spectrum at 100 K of the monooxidized species displays g Þ =2.00 and g =1.96 attributed to the presence of a radical coming from the phenylcyanamide oxidation, in relative good agreement with EH and ZINDO calculations.