Synthesis, crystal structure and Hirshfeld surface analysis of a polymeric bismuthate(III) halide complex, (C6H6N3)2[BiCl5]·2H2O

The synthesis and the crystal structure of a new halide-bridged polymer, namely catena-poly[bis(1,2,3-benzotriazolium) [[tetrachloridobismuth(III)]-μ-chlorido] dihydrate], {(C6H6N3)2[BiCl5]·2H2O}n are reported. The structure comprises polyanionic zigzag chains of formula [(BiCl5)2−]n running along the c-axis direction. The 1,2,3-benzotriazolium cations are linked between these polymer chains, via the water molecules, giving rise to left- and right-handed helical chains. Hirshfeld surface analysis and fingerprint plots were used to decode the intermolecular interactions in the crystal network and determine the contribution of the component units for the construction of the three-dimensional architecture