Poly[[triaqua(μ3-4-oxidopyridine-2,6-dicarboxylato)terbium(III)] monohydrate

Abstract

In the title coordination polymer, {[Tb(C7H2NO5)(H2O)3]·H2O}n, the TbIII atom is eight-coordinated by a tridentate 4-oxidopyridine-2,6-dicarboxyl­ate trianion, two adjacent monodentate anions and three water mol­ecules, forming a distorted bicapped trigonal–prismatic TbNO7 coordination environment. The anions bridge adjacent TbIII ions into double chains. Adjacent chains are further connected into sheets parallel to (10). O—H⋯O hydrogen bonds involving both coordinated and uncoordinated water mol­ecules generate a three-dimensional network.