Poly[[diaqua(3-carboxy-5-nitrobenzoato)(μ-5-nitrobenzene-1,3-dicarboxylato)neodymium(III)] 2.5-hydrate]

• Main Authors: Nurul-Nadia Raime, Rohana Adnan, Mohd Mustaqim Rosli, Hoong-Kun Fun
• Format: Article
• Language: English
• Published: International Union of Crystallography 2009-09-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536809032486
• ISSN: 1600-5368

In the title compound, {[Nd(C8H3NO6)(C8H4NO6)(H2O)2]·2.5H2O}n, the NdII ion is nine-coordinated by seven O atoms from five carboxylate groups and two water molecules. The [Nd(C8H3NO6)(H2O)2]2+ units are bridged by 5-nitroisophthalate dianions, forming polymeric sheets parallel to the ab plane. The polymeric sheets are linked into a three-dimensional network by O—H...O and C—H...O hydrogen bonds, and π–π interactions [centroid–centroid distance = 3.5533 (11) Å]. The 5-nitroisophthalate(1−) anion is disordered over three positions with an occupancy ratio of 0.68:0.23:0.09. Two of the uncoordinated water molecules are disordered over two positions, with occupancy ratios of 0.722 (15):0.278 (15) and 0.279 (6):0.221 (6), respectively.