title: A three-dimensional framework of bis[tris(ethylenediamine)zinc] tetraiodocadmate diiodide assisted by N-H...I hydrogen bonds.
abstract: The title salt, [Zn(C(2)N(2)H(8))(3)](2)[CdI(4)]I(2), conventionally abbreviated [Zn(en)(3)](2)[CdI(4)]I(2), where en is ethylenediamine, contains discrete [Zn(en)(3)](2+) cations and [CdI(4)](2-) anions with distorted octahedral and nearly tetrahedral geometries, respectively, as well as uncoordinated I(-) ions. The cation and the free I(-) anion lie on twofold rotation axes and the [CdI(4)](2-) anion lies on a -4 axis in the space group I-42d. The structure exhibits numerous weak inter-ionic hydrogen bonds of two types, viz. N-H...I(-)(free ion) and N-H...I([CdI(4)](2-)), which support the resulting three-dimensional framework.
authors.affiliation: Department of Inorganic Chemistry, National Taras Shevchenko University, Volodymyrska Street 64, Kiev 01033, Ukraine. sana@univ.kiev.ua
authors.forename: Oksana V
authors.initials: OV
authors.lastname: Nesterova
authors.forename: Svitlana R
authors.initials: SR
authors.lastname: Petrusenko
authors.forename: Viktoria V
authors.initials: VV
authors.lastname: Dyakonenko
authors.forename: Oleg V
authors.initials: OV
authors.lastname: Shishkin
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Linert