A study of the second coordination sphere in 8-azaxanthinato salts of divalent metal aquacomplexes

Analysis of the hydrogenbond network in the structures of the salts with hexaaaqua complexes of divalent Mn, Co, Ni, Zn and Cd as cations and the deprotonated forms of the monomethyl and dimethyl derivatives of 8-azaxanthine as anions.