Xanthate complexes mixed-ligand structures

As with earlier sections, there is a lack of structural data on binary xanthates for iron, ruthenium, and osmium, but there are a relatively large number of mixed-ligand complexes, particularly organometallic species. 

Of the transition metals, the nickel triad has been the most studied in terms of xanthate structures, especially nickel xanthates. Thus, binary xanthate structures are known for all elements with no less than 15 binary nickel xanthate structures known and these aggregate in the solid state in six distinct supramolecular architectures. There is also a rich diversity of adducts as well as mixed-ligand complexes, in particular for nickel. 

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