Synthesis and crystal structure of a neodymium coordination polymer with 2,6-anthraquinonedisulfonate

The coordination polymer, (Nd(H2O)5)2(2,6-AQDS)3. 2H2O 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.