Abstract
Spectrophotometric studies on acetate-buffered solutions (pH 4.8) of Mn2+ ions and ligand 1, 2, or 3 at 25°C and ionic strength I=0.1(NaClO4) reveal the formation of the Mn(HL)+ complexes in each case which show the following absorption maxima λmax (in nm), the molar extinction coefficients loge ε (in L·mol−1·cm−1), and the stability constants log K, determined spectrophotometrically:
ligand | complex | λmax | log ε | log K*) |
|---|---|---|---|---|
1 | Mn(C13H11N4O)+ | 531 | 2.76 | 4.12 |
2 | Mn(C13H10N5O3)+ | 595 | 3.23 | 3.61 |
3 | Mn(C13H10N5O3)+ | 572 | 3.18 | 3.50 |
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Boucher, L.J., Koeber, K., Tille, D., Demmer, H., Köttelwesch, H., Schleitzer-Rust, E. (1988). Complexes with Carbazones, Thiocarbazones, and Formazans. In: Demmer, H., Köttelwesch, H., Schleitzer-Rust, E., Tille, D. (eds) Mn Manganese. Gmelin Handbook of Inorganic Chemistry / Gmelin Handbuch der Anorganischen Chemie, vol M-n / D / 6. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-08178-5_4
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