The bonding of the dithiocarbamate ligand to a metal can be ionic (when the metal is high spin) or covalent (when low spin), or a mixture. The electron distribution between nitrogen, carbon and the sulfurs determines the ligand field strength of the dithiocarbamate and influences the equilibrium position between the high spin and low spin forms of the metal.  The organic portion of the ligand can influence the electron distribution in the rest of the ligand.  These effects can be steric, inductive and/or resonance. Isolating each of the three possible effects due to the alkyl group ( R) is challenging as there is often overlap. Moving electron withdrawing groups to the alkyl group reduces the inductive effect, but eliminates the resonance effect.   Synthesis of dithiocarbamates with electron withdrawing and electron donating atoms on the alkyl portion of the ligand would be the first novel dithiocarbamates investigated.

Synthesis of unique dithiocarbamate ligands

243rd National Meeting (2012)

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