title: Chemistry and structure by design: ordered CuNi(CN)4 sheets with copper(ii) in a square-planar environment.
abstract: Layered copper-nickel cyanide, CuNi(CN)4, a 2-D negative thermal expansion material, is one of a series of copper(ii)-containing cyanides derived from Ni(CN)2. In CuNi(CN)4, unlike in Ni(CN)2, the cyanide groups are ordered generating square-planar Ni(CN)4 and Cu(NC)4 units. The adoption of square-planar geometry by Cu(ii) in an extended solid is very unusual.
authors.affiliation: Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, UK. a.m.chippindale@rdg.ac.uk.
authors.forename: A M
authors.initials: AM
authors.lastname: Chippindale
authors.forename: S J
authors.initials: SJ
authors.lastname: Hibble
authors.forename: E
authors.initials: E
authors.lastname: Marelli
authors.forename: E J
authors.initials: EJ
authors.lastname: Bilbe
authors.forename: A C
authors.initials: AC
authors.lastname: Hannon
authors.forename: M
authors.initials: M
authors.lastname: Zbiri