Crystal structure of NH₃(CH₂)₂NH₃BiCl₅·2H₂O

Abstract

The ethylenediammonium pentachlorobismuthate(III) dihydrate salt is monoclinic with the following unit cell dimensions: a = 10.902(8)Å, b = 7.926(6)Å, c = 15.199(6)Å, β = 96.40(1)°, space group P2₁/n with Z = 4. The structure shows a layer arrangement parallel to the $\vec a$ axis: planes of the [Bi₂Cl₁₀]⁴⁻ bioctahedra alternate with planes of [NH₃(CH₂)₂NH₃]²⁺ dications. The [Bi₂Cl₁₀]⁴⁻ bioctahedra are connected through O(W)–H··· Cl hydrogen bonds, so that infinite unidimensional chains of composition [Bi₂Cl₁₀(H₂O)₂] ⁴ⁿ⁻_n are formed in the structure parallel to the $\vec a$ axis. These chains are themselves interconnected by means of the N–H···Cl bonds originating from the [NH₃(CH₂)₂NH₃]²⁺ entities, forming a three-dimensional network.