metal-organic compounds
In the crystal structure of the title two-dimensional complex, {[Cu(C8H4O5)(C5H6N2)2]·H2O}n, the Cu atom has a distorted square-pyramidal coordination geometry. As well as O—HO hydrogen bonds within a two-dimensional layer, there are N—HO hydrogen bonds which connect layers into a three-dimensional network. In addition, there are significant π–π stacking interactions between layers.