Synthesis, crystal structure and Hirshfeld surface analysis of bromido-tetra-kis-[5-(prop-2-en-1-yl-sulf-an-yl)-1,3,4-thia-diazol-2-amine-κ]copper(II) bromide.

A novel cationic complex, bromido-tetra-kis-[5-(prop-2-en-1-ylsulfan-yl)-1,3,4-thia-diazol-2-amine-κ ]copper(II) bromide, CuBrBr, was synthesized. The complex crystallizes with fourfold mol-ecular symmetry in the tetra-gonal space group 4/. The Cu atom exhibits a square-pyramidal coord-ination geometry. The Cu atom is located centrally within the complex, being coordinated by four nitro-gen atoms from four AAT mol-ecules, while a bromine anion is located at the apex of the pyramid. The amino H atoms of AAT inter-act with bromine from the inner and outer spheres, forming a two-dimensional network in the [100] and [010] directions. Hirshfeld surface analysis reveals that 33.7% of the inter-mol-ecular inter-actions are from H⋯H contacts, 21.2% are from S⋯H/H⋯S contacts, 13.4% are from S⋯S contacts and 11.0% are from C⋯H/H⋯C, while other contributions are from Br⋯H/H⋯Br and N⋯H/H⋯N contacts.