Synthesis, crystal structure and Hirshfeld surface analysis of a polymeric bis­muthate(III) halide complex, (C(6)H(6)N(3))(2)[BiCl(5)]·2H(2)O

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], {(C(6)H(6)N(3))(2)[BiCl(5)]·2H(2)O}(n) are reported. The structure comprises polyanionic zigzag chains of formula [(BiCl(5))(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.