title: Layered poly[mu2-aqua-mu3-dimethylformamide-di-mu3-phenylphosphonato-dipotassium].
abstract: The first structurally characterized alkali metal phosphonate, the title compound, [K2(C6H6O3P)2(C3H7NO)(H2O)]n, has a complex structure, with layers parallel to the crystallographic bc plane consisting of two crystallographically independent K atoms sandwiched between the three types of ligands present in the structure, viz. water molecules, dimethylformamide molecules and two crystallographically independent phenylphosphonate ligands. Six O atoms coordinate to one K atom and seven to the other. The interlayer distance is 15.327 (4) A. The K-O distances are in the range 2.739 (2)-2.932 (2) A for the seven-coordinate K atom and 2.650 (2)-2.821 (2) A for the six-coordinate K atom.
authors.affiliation: Laboratório de Materiais Inorgânicos, Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
authors.forename: Márcia R
authors.initials: MR
authors.lastname: Siquiera
authors.forename: Janaina T
authors.initials: JT
authors.lastname: Facco
authors.forename: Ernesto S
authors.initials: ES
authors.lastname: Lang
authors.forename: Fabiane
authors.initials: F
authors.lastname: Lorenzini
authors.forename: Mara R
authors.initials: MR
authors.lastname: Rizzatti
authors.forename: Javier
authors.initials: J
authors.lastname: Ellena
authors.forename: Robert A
authors.initials: RA
authors.lastname: Burrow