title: Structure and thermal decomposition of poly[[triaqua(mu4-oxydiacetato)lanthanum(III)] nitrate].
abstract: In the title lanthanum complex, {[La(C(4)H(4)O(5))(H(2)O)(3)]NO3}n, the lanthanum cation is immersed in a nine-coordinate environment provided by a tridentate oxydiacetate (oda) ligand (through two carboxylate and one ether O atoms), three carboxylate O atoms from neighbouring oda ligands and three aqua ligands. The LaO9 polyhedra are interlinked into a tight three-dimensional framework, which leaves holes where the nitrate anions lodge. The links to the polymeric framework are by an extensive hydrogen-bonding scheme utilizing all the water H atoms. Thermogravimetric analysis shows that the three coordinated water molecules leave the structure in two well differentiated steps.
authors.affiliation: Departamento de Física, Comisión Nacional de Energía Atómica, Buenos Aires, Argentina.
authors.forename: Griselda
authors.initials: G
authors.lastname: Polla
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Garland
authors.forename: Ricardo
authors.initials: R
authors.lastname: Baggio