Cobalt Tris(diethyldithiocarbamate)
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Cobalt tris(diethyldithiocarbamate) is the
coordination complex A coordination complex is a chemical compound consisting of a central atom or ion, which is usually metallic and is called the ''coordination centre'', and a surrounding array of chemical bond, bound molecules or ions, that are in turn known as ' ...
of cobalt with
diethyldithiocarbamate Sodium diethyldithiocarbamate is the organosulfur compound with the formula . It is a pale yellow, water soluble salt. Preparation Sodium diethyldithiocarbamate typically crystallizes from water as the trihydrate . The anhydrous salt and the t ...
with the formula Co(S2CNEt2)3 (Et = ethyl). It is a diamagnetic green solid that is soluble in organic solvents.


Synthesis, structure, bonding

Cobalt tris(dithiocarbamate)s are typically are prepared by air-oxidation of mixtures of dithiocarbamate salts and a cobalt(II) nitrate. Cobalt tris(diethyldithiocarbamate) is an octahedral
coordination complex A coordination complex is a chemical compound consisting of a central atom or ion, which is usually metallic and is called the ''coordination centre'', and a surrounding array of chemical bond, bound molecules or ions, that are in turn known as ' ...
of low-spin Co(III) with idealized D3
symmetry Symmetry () in everyday life refers to a sense of harmonious and beautiful proportion and balance. In mathematics, the term has a more precise definition and is usually used to refer to an object that is Invariant (mathematics), invariant und ...
. The Co-S distances are 267 pm.


Reactions

Oxidation of Co(Et2dtc)3 occurs at mild potentials to give the cobalt(IV) derivative. Treatment of Co(Et2dtc)3 with
fluoroboric acid Fluoroboric acid or tetrafluoroboric acid (archaically, fluoboric acid) is an inorganic compound with the simplified chemical formula . Solvent-free tetrafluoroboric acid () has not been reported. The term "fluoroboric acid" usually refers to a ra ...
results in the removal of 0.5 equiv of ligand giving a binuclear cation: :2Co(Et2dtc)3 + HBF4 → o2(Et2dtc)5F4 + "Et2NdtcH"


See also

*
Iron tris(diethyldithiocarbamate) Iron tris(diethyldithiocarbamate) is the coordination complex of iron with diethyldithiocarbamate with the formula Fe(S2CNEt2)3 (Et = ethyl). It is a black solid that is soluble in organic solvents. Synthesis, structure, bonding Iron tris(dithi ...
- a related dimethyldithiocarbamate complex of iron


References

{{reflist Dithiocarbamates Cobalt complexes