title: Poly[[[μ(3)-5-(pyridine-4-carboxamido)-isophthalato]{μ(3)-5-[(pyridin-1-ium-4-yl)carbonyl-amino]-isophthalato}-neodymium(III)] dihydrate].
abstract: In the title compound, {[Nd(C(14)H(9)N(2)O(5))(C(14)H(8)N(2)O(5))]·2H(2)O}(n), the Nd(III) atom is eight-coordinated as it is surrounded by eight carboxyl-ate O atoms from six ligands in a distorted square-anti-prismatic arrangement. The Nd(III) atoms are linked by HL(-) and L(2-) ligands [H(2)L is 5-(pyridine-4-carboxamido)-isophthalic acid], forming a bilayer network. The layers are linked into a three-demensional network through N-H⋯O and O-H⋯O hydrogen bonds.
authors: Department of Chemistry and Materials Science, Hengyang, Hunan 421008,  People's Republic of China.
authors: Yi-Fang
authors: YF
authors: Deng