@article{oai:niigata-u.repo.nii.ac.jp:00001489,
 author = {Ikarashi, K. and Taoyun, Z. and Uematsu, K. and Toda, K. and Sato, M.},
 issue = {8},
 journal = {Acta Crystallographica Section E, Structure reports online, Acta Crystallographica Section E, Structure reports online},
 month = {Aug},
 note = {The crystal structure of the title compound, {[NaSm(C_7H_3NO_4)_2(H_2O)_4]·3H_2O}_n, was first reported by van Albada, Gorter & Reedijk [(1999), Polyhedron, 18, 1821-1824]. It has now been reinvestigated and confirmed from single-crystal data, giving greater understanding of the role of the water molecules. The two-dimensional layers found in the compound are built up from six-coordinate NaO_6 polyhedra and nine-coordinate SmN_2O_7 polyhedra. The former share edges with each other along the c axis and the latter are bridged by carboxylate groups of pyridine-2,6-dicarboxylate anions along the b axis. Eight-membered rings of water molecules, connected to one another by hydrogen bonding, are formed in the interlayer spaces.},
 pages = {m2203--m2204},
 title = {Reinvestigation of layered poly[aquasodium(I) [[aquasamarium(III)]-di-μ-aqua-μ3-pyridine-2,6-dicarboxylato-μ2-pyridine-2,6-dicarboxylato] trihydrate]},
 volume = {63},
 year = {2007}
}