The crystal structure determinations of ,5-dimercapto-1,3-dithiole-2-t
hionato)cobalt(III), [Co(C5H5)(C3S5)], and o)(eta(5)-pentamethylcyclop
entadienyl)cobalt(III), [Co(C10H15)(C3S5)], show that Cp substitution
does not significantly modify the geometric features of these complex
es, which are characterized by a perpendicular arrangement of the plan
ar Cp or Cp and (CoS2C2) moieties.