The coordination polymer, (Nd(H 2 O) 5 ) 2 (2,6-AQDS) 3 ·2H 2 O where 2,6-AQDS = 2,6- anthraquinonedisulfonate, has been synthesised via a hydrothermal route. Structurally, it consists of layers of monomeric Nd polyhedra which are linked by 2,6-AQDS anions forming a polymeric, three-dimensional network. Each Nd atom is nine coordinate, bonding to five water molecules and to four oxygen atoms from four 2,6-AQDS anions which in turn pillar the layers by bridging two Nd atoms in one layer, and coordinating to a single Nd in the other. The coordination polymer, (Nd (H 2 O) 5) 2 (2,6-AQDS) 3 · 2H 2 O where 2,6-AQDS = 2,6- anthraquinonedisulfonate, has been synthesized via via a hydrothermal route. consists of layers of monomeric Nd polyhedra which are linked by 2,6-AQDS anions forming a polymeric, three-dimensional network. Each Nd atom is nine coordinate, bonding to five water molecules and to four oxygen atoms from four 2,6-AQDS anions which in turn pillar the layers by bridging two Nd atoms in one layer, and coordinating to a single Nd in the other.