Summary
Reaction of [NH4]2[WS4] with CuX (X = Cl or I) and R4NX (R = Et or n-Bu) in the solid state gave two new bimetallic compounds with W:Cu compositions from 1:3 to 1:4. Compound (1), [(n-Bu)4N]3[WS4Cu3Cl3Br], crystallizes in the hexagonal space group R3c with a = 17.051(5), c = 38.372(5) Å, V = 9661.8 Å3, Z = 6. The cluster anion of (1) comprises a cubane-like cluster core [WS3Cu3Br] of C3 symmetry with a Cl atom attached to each of the three Cu atoms and one terminal sulphido ligand attached to the W atom. Compound (2), [Et4N]4[WS4Cu4I6], crystallizes in the monoclinic space group C2/m with a = 29.702(6), b = 12.7887(5), c = 15.327(3)Å, β = 99.69(2)∘, V = 5738.1 Å3, Z = 4. In the cluster anion of (2), four edges of the WS4 core are coordinated by four Cu atoms, giving a WS4Cu4 aggregate of approximate C2V symmetry.
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Lang, JP., Bian, GQ., Cai, JH. et al. Solid state synthesis of copper(I) thiotungstate cluster compounds at low heating temperatures. Crystal structures of [(n-Bu)4N]3-[WS4Cu3Cl3Br] and [Et4N]4[WS4Cu4I6]. Transition Met Chem 20, 376–379 (1995). https://doi.org/10.1007/BF00139134
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DOI: https://doi.org/10.1007/BF00139134