Gimenez Plaza, J. published the artcile2-Pyridylaldehyde-2-pyridylhydrazone as an analysis reagent. II. Spectrophotometric determination of nickel(II), COA of Formula: C11H10N4, the publication is Revista de la Sociedad Quimica de Mexico (1981), 25(4), 488-91, database is CAplus.
Ni2+ reacts with 2-pyridylaldehyde-2-pyridylhydrazide to form a yellow 1:1 complex which has maximum absorbance at 355 nm and pH 7.5. The color is stable up to 3 h when the order of addition is reagent + cation + buffer. Beer’s law is obeyed for 1-7 ppm Ni. Ag, Hg(II), Sb(III), Sn(II), Fe(II), Fe(III), Al, Co(II), Zn, Mn(II), Pd(II), Be, Cu(II), Cd, Au(III), Bi, Ce(IV), Ca, Sr, Ba, and Mg 2 ppm interfere.
Revista de la Sociedad Quimica de Mexico published new progress about 2215-33-0. 2215-33-0 belongs to pyridine-derivatives, auxiliary class Pyridine,Amine, name is 2-((2-(Pyridin-2-yl)hydrazono)methyl)pyridine, and the molecular formula is C11H10N4, COA of Formula: C11H10N4.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem