d
d
\(N i^{2+}\) reacts with dimethyl glyoxime to form a complex which has a cherry-red precipitate.It is stabilized by hydrogen bonding.
Two dmg ligands are linked to each other through hydrogen bonds.
\(N i^{2+}+2 D M G \frac{+2 O H^{-}}{-2 H_{2} O} \underbrace{\left[N i(D M G)_{2}\right]}_{\text {Cherryredprecipitate }}\)