Copper halide-chalcogenoether and -chalcogenone networks: Chain and cluster motifs, polymer dimensionality and photophysical properties

Copper(I) halides react with mono- and polychalcogenoethers and -chalcogenones to form 0-3D coordination materials containing neutral polynuclear CuxXxEy species (E = S, Se, Te; X = Cl, Br, I; x = 2-8) called secondary building units (SBU). These species exhibit two general types of motifs namely globular and quasi-planar. Depending on the shape of these polynuclear species and the dimensionality of the network, their properties and applications are profoundly different. In a structural point of view for instance, when X = I, and E = S, the globular family includes cubane, open cubane, fused dicubane, fused open dicubane, hexagonal prism, and 1D-polycubane. Concurrently, the quasi-planar family includes rhomboid, trinuclear cluster, step staircase, 1D-zig zag ribbon, 1D-acordeon ribbon and 1D-staircase ribbon. Both the cubane and rhomboid motifs are overwhelmingly represented (>80%). Generally, the globular species are generally strongly luminescent. In contrast, the quasi-planar family exhibits only modest intensity luminescence or no emission at all. This review provides a thorough statistical analysis of these SBUs, in a structural point of view, along with their photophysical properties. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

Copper(I) halides react with sulfides, selenides, and tellurides to form coordination materials containing neutral polynuclear species, which exhibit globular and quasi-planar motifs with different properties and applications.