title: Poly[diacetonitrile-[μ(3)-difluoro-(oxalato)borato]sodium].
abstract: The title compound, [Na(C(2)BF(2)O(4))(CH(3)CN)(2)](n), forms infinite two-dimensional layers running parallel to (010). The layers lie across crystallographic mirror planes at y = 1/4 and 3/4. The Na, B and two F atoms reside on these mirror planes. The Na(+) cations are six-coordinate. Two equatorial coordination positions are occupied by acetonitrile mol-ecules. The other two equatorial coordination sites are occupied by the chelating O atoms from the difluoro-(oxalato)borate anion (DFOB(-)). The axial coordination sites are occupied by two F atoms from two different DFOB(-) anions.
authors.forename: Joshua L
authors.initials: JL
authors.lastname: Allen
authors.forename: Paul D
authors.initials: PD
authors.lastname: Boyle
authors.forename: Wesley A
authors.initials: WA
authors.lastname: Henderson