Reactions of silver salts with 4-amino-3,5-diisopropyl-1,2,4- 4 . On the basis of the X-ray analyses, anions are found to play an important role in determining the structures. Through coordination/ noncoordination, anions can impart their influence on the co-

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The title compounds both contain a central metal atom in a distorted octa­hedral geometry coordinated equatorially by four oxygen atoms from water mol­ecules. In the MnII complex, the axial positions are occupied by a nitro­gen atom from the ligand and an oxygen atom from the sulfate anion, whereas in the CdII complex they contain two nitro­gen atoms from two different ligands and the sulfate anion only serves as the charge-balancing ion. π–π stacking between pyridine rings plays a crucial role in the mol­ecular self-assembly of the two structures.