Hexakis(imidazole)manganese(II) dichloride tetrahydrate, [Mn(C3H4N2)6]Cl2.4H2O, and hexakis(imidazole)zinc(II) dichloride tetrahydrate, [Zn(C3H4N2)6]Cl2.4H2O
Distribution of the number of citations over years.