Thermal decomposition of cis-dicarbonylbis(diorganodithiocarbamato)iron(II) often initiates with the loss of one or both carbonyl ligands, depending on the nature of the dithiocarbamate ligand. Previous work at Wheeling Jesuit University using thermal gravimetric analysis has indicated the presence of stable intermediates produced during the thermal decomposition of cis-dicarbonylbis(diorganodithiocarbamato)iron(II) complexes. In particular, evidence suggests the possible formation of monocarbonylbis(diorganodithiocarbamato)iron(II) and bis(diorganodithiocarbamato)iron(II). Bis(diorganodithiocarbamato)iron(II) is not stable in air and its synthesis usually requires multiple steps under an inert atmosphere. In contrast, the cis-dicarbonylbis(diorganodithiocarbamato)iron(II) is air stable and can be synthesized from triiron dodecacarbonyl without the use of an inert atmosphere. Only the final thermal decomposition step requires an inert atmosphere. The cis-dicarbonylbis(diorganodithiocarbamato)iron(II) can be easily stored in air until needed as a precursor for the synthesis of bis(diorganodithiocarbamato)iron(II). This study also investigates the relationship between the nature of the dithiocarbamate ligand and the thermal decomposition process.

Synthesis of bis(diorganodithiocarbamato)iron(II) by the thermal decomposition of cis-dicarbonylbis(diorganodithiocarbamato)iron(II)

249th National Meeting (2015)

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