title: catena-Poly[[[tetraaqua(3,5-dinitro-4-oxidopyridine N-oxide-κO)neodymium(III)]-μ-oxalato-κO,O:O,O] tetrahydrate].
abstract: In the title coordination polymer, {[Nd(C(5)H(2)N(3)O(6))(C(2)O(4))(H(2)O)(4)]·4H(2)O}(n), the oxalate dianions link adjacent nine-coordinate, tricapped trigonal-prismatic Nd(III) atoms into a chain running along the b axis. The 3,5-dinitropyridin-4-oxido N-oxide ligand is formally a zwitterionic anion; the anion binds to the metal atom through the N-oxide O atom. The chains are connected into a three-dimensional network by O-H⋯O hydrogen bonds involving the coordinated and uncoordinated water mol-ecules.
authors: Yin-Feng
authors: YF
authors: Han
authors: Seik Weng
authors: SW
authors: Ng
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677