More than 50 of layered (i.e., 2D) coordination polymers containing (CuX) n clusters (X = Cl, Br, I; n = 2, 4, 5, 6, and 8) as secondary building units (SBUs) and mono- and dithioether as assembling ligands are described. This mini-review is separated into two categories; mono- (10) and dithioether (45 polymers), devoted on 2D networks. Within these 55 2D structures visited, the occurrence of the SBU motifs (CuX) n where n = 2, 4, 5, 6, and 8 are dominated by the rhomboids (Cu 2 X 2 S x ; 30) and the closed and open cubanes (Cu 4 I 4 S 4 ; 16). Only 10 different other SBU motifs are found in these 2D materials (note that one polymer shares two different motifs). Some emission properties are also provided. Generally, closed cubane cluster-containing coordination polymers exhibit more intense emissions than the rhomboid dimers, which are very weakly or non-emissive.
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