ACID-BASE AND ELECTROCHEMICAL PROPERTIES OF THE MLCT EXCITED-STATES AND ONE-ELECTRON-REDUCED FORMS OF RUTHENIUM(II) COMPLEXES CONTAINING 2-(2'-PYRIDYL)PYRIMIDINE AND 2,2'-BIPYRIDINE IN AQUEOUS-SOLUTION
F. Casalboni et al., ACID-BASE AND ELECTROCHEMICAL PROPERTIES OF THE MLCT EXCITED-STATES AND ONE-ELECTRON-REDUCED FORMS OF RUTHENIUM(II) COMPLEXES CONTAINING 2-(2'-PYRIDYL)PYRIMIDINE AND 2,2'-BIPYRIDINE IN AQUEOUS-SOLUTION, Inorganic chemistry, 36(11), 1997, pp. 2252-2257
The acid-base and electrochemical properties of the MLCT excited state
s and the one-electron-reduced forms of the three Ru(bpy)(3-p)(pypm)(p
)(2+) complexes, where bpy = 2,2'-bipyridine, pypm = 2 (2'-pyridyl)pyr
imidine, and p = 1-3, have been examined in aqueous solution; a determ
ination has been made of the ground- and excited-state electrochemical
potentials, the values of the pK(a) and deprotonation rate constants
of the conjugate acids of the excited states and the one-electron-redu
ced complexes, and the kinetics of the second-order decays of the redu
ced species. Comparison is made with the behavior of the analogous 10
complexes of the form Ru(bpy)(3-m-z)(bpm)(m)(bpz)(z)(2+), where bpm =
2,2'-bipyrimidine, bpz = 2,2'-bipyrazine, m and z = 0-3, and m + z les
s than or equal to 3, which have been studied in detail before.