An indium(III)–water chain based on an unusual acyclic water pentamer

Abstract

An in situ reaction under hydro­thermal conditions leads to the formation of the title compound, diaqua­(pyridine-2-carboxyl­ato)­(pyridine-2,6-dicarboxyl­ato)indium(II) trihydrate, [In(C6H4NO2)(C7H3NO4)(H2O)2]·3H2O, in which the central InIII atom is seven-coordinated by one pyridine-2,6-di­carboxyl­ate ligand, one pyridine-2-carboxyl­ate ligand and two water mol­ecules in a penta­gonal–bipyramidal coordination environment. An indium(III)–water chain based on an unusual water pentamer is observed.