Bis[μ-2-(4-hydroxyphenyl)acetato]-κ3 O,O′:O;κ3 O:O,O′-bis{aqua(4,4′-bi­pyri­dine-κN)bis[2-(4-hydroxyphenyl)acetato-κ2 O,O′]gadolinium(III)} monohydrate

摘要

In the dinuclear title complex, [Gd2(C8H7O3)6(C10H8N2)2(H2O)2]·H2O, the two GdIII ions are nine-coordinated by seven O atoms from four deprotonated p-hy­droxy­phenyl­acetic acid (PAA) ligands, one water O atom and an N atom from a 4,4′-bypyridine (bipy) ligand in a distorted tricapped trigonal-prismatic geometry. The deprotonated PAA ligands are coordinated to the GdIII atom either as chelating on the same metal or in a tridentate bridging mode. Numerous O—H⋯O and O—H⋯N hydrogen bonds involving hydroxyl, coordinated and uncoordinated water mol­ecules build up an intricate three-dimensional network.