Tetra­kis[μ-2-(4-hy­droxy­phenyl)­acetato]-κ(3) O,O′:O;κ(3) O:O,O′-bis­{aqua­(4,4′-bi­pyridine-κN)bis­[2-(4-hy­droxy­phenyl)­acetato-κ(2) O,O]neodymium(III)} monohydrate

The title complex, [Nd(2)(C(8)H(7)O(3))(6)(C(10)H(8)N(2))(2)(H(2)O)(2)]·H(2)O, contains two Nd atoms, six 4-hy­droxy­phenyl­acetate (hpaa) anions, two 4,4′-bipyridine mol­ecules (bipy) and two water mol­ecules; an additional water mol­ecule of solvation is also present in the crystal structure. Each of the Nd(III) ions is nine-coordinated by seven O atoms from four hpaa ligands, an N atom from a bipy ligand and an O atom from a water mol­ecule in a distorted tricapped trigonal-prismatic geometry. The hpaa ligands are coordinated to the Nd(III) ions in the bridging and bridging tridentate modes. Extensive O—H⋯O, O—H⋯N and C—H⋯O hydrogen bonding stabilizes the crystal structure.