Investigations of manganese(II) compounds of NN-disubstituted di-thiocarbamates

Abstract

The new manganese(II) compounds [Mn(S₂CNR₂)₂](I; R = Me, Et, Prⁿ, or Buⁱ, or R₂= C₄H₈) have magnetic properties expected for bi- or poly-nuclear structures in which antiferromagnetic interaction occurs. X-Ray powder investigations indicate that when R = Prⁿ the copper(II)(known to be sulphur-bridged and binuclear) and manganese(II) compounds are of similar structure, but contrary to an earlier report the compounds with R = Et are not. Similarities between the powder data for certain iron(II) and manganese(II) compounds (R = Me or R₂= C₄H₈) suggest that the latter are polynuclear. The magnetic results do not confirm the previous assignment of a spin-quartet state to (I; R = Et), which was in error because of partial oxidation. Reaction of nitrogen oxide, NO, with this compound does not give a stable nitrosyl, but produces an oxidation product of the approximate composition Mn(S₂CNEt₂)₂OH.