Sulphur ligand metal complexes. Part 6. Copper complexes of 2,5-dithiahexane and 3,6-dithiaoctane
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 22,p. 2375-2381
- https://doi.org/10.1039/dt9760002375
Abstract
The dithioethers 2,4-dithiahexane (dth) and 3,6-dithiaoctane (dto) form the following complexes, some of which have been previously reported, with CuII and CuI: Cu(BF4)2L2 and CuX2L (L = dth or dto, X = Cl or Br); [CuL2]X (L = dth or dto. X = SF,: L = dth, X = ClO4); CuXL (L = dth, X = Cl, Br, or I; L = dto, X = I or SCN); and (CuCl)2L (L = dto, X = Cl or Br). The complexes have been characterized by a variety of physicochemical techniques and where possible structures are proposed. The nature of the copper–sulphur bond is discussed and it is concluded that thioethers do not form appreciable π bonds with CuII. The chelated thioether ligand is readily displaced, e.g. from CuCl2L (L = dth or dto) and CuCl(dth). by a variety of ligands (e.g. pyridine, pyrrolidine, 2,2′-bipyridyl,ethylenediamine, PPh3, PMe3S, and Na[S2PMe2]·2H2O). With PPh3 and CuCl(dth) the adduct CuCl(PPh3)(dth) is formed.Keywords
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