The 2-Pyridylcyanoxime and its Complexes
The preparation of 2-pyridyl cyanoxime (hereafter referred to as H(2PCO)), along with several metal complexes, is described in detail. The cyanoxime was investigated in solutions, and its two protonation constants were measured spectrophotometrically following a significant shift of the compound's Ï€â†’Ï€* transitions at 208 and 280 nm. The first, with pK1=1.81(9), corresponds to proton release from the pyridine moiety, and the second, pK2=6.77(1), corresponds to a proton release from the hydroxyimino group.
C Marcano, Daniela, Sergey V Lindeman, Monica Pyrkosz-Bulska, Elzbieta Gumienna-Kontecka, Attila Lengyel, Erno Kuzmann, Frank Rominger, and Nikolay Gerasimchuk. "The 2-Pyridylcyanoxime and its Complexes." Current Inorganic Chemistry 5, no. 2 (2015): 98-113.
Current Inorganic Chemistry