Yb. Lei et al., EFFECTS OF COORDINATION TO TRANSITION-METALS ON THE HYDRATION AND ELECTROACTIVITY OF THE CHELATING LIGAND 1,10-PHENANTHROLINE-5,6-DIONE, Inorganic chemistry, 35(10), 1996, pp. 3044-3049
The intrinsically electroactive ligand in the title was coordinated to
Co2+, Fe2+, Ni2+, Zn2+, and Cu+, and the resulting hydration of the c
arbonyl groups of a portion of the coordinated ligand eliminated its e
lectroactivity, The extent of hydration of the coordinated ligand was
evaluated by means of rotating disk voltammetry. Estimates were obtain
ed for the equilibrium constants governing the hydration reaction. The
hydration induced by coordination of the ligand to the metal cations
varied in parallel with the magnitude of the first association constan
t for the metal-ligand coordination.