title: A three-dimensional anionic metal-dicyanamide network in poly[ethyltriphenylphosphonium [tri-μ2-dicyanamidato-cadmium(II)]].
abstract: The title compound, (C20H20P)[Cd(C2N3)3], consists of ethyltriphenylphosphonium (EtPh3P(+)) cations filling voids in a three-dimensional anionic cadmium dicyanamide network. In the structure, each Cd(II) atom is connected to six neighbouring Cd(II) atoms through six separate dicyanamide ligands, forming cube-shaped cages. The three-dimensional anionic network encloses a solvent-accessible void space of 1851 Å(3), amounting to 69.3% of the unit-cell volume. Each cage accommodates only one EtPh3P(+) cation.
authors.affiliation: Ordered Matter Science Research Center, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
keywords: cadmium complex; crystal structure; dicyanamide; metal–organic polymeric networks; phase-transition materials; three-dimensional coordination polymer