Synthesis, characterization and reactions of cluster complexes Fe₄(HSCH₂CH₂SH)₂(CO)₁₂ Fe₂(HSCH₂CH₂SH)(CO)₈ and Fe₂(HSCH₂CH₂SH)(CO)₆

Abstract

An iron-sulphur cluster complex, Fe₄(HSCH₂CH₂SH)₂(CO)₁₂(<b>I</b>) has been synthesized by thermal reaction of 1,2-ethanedithiol, HSCH₂CH₂SH with Na₂[Fe(CO)₄] and Fe₃(CO)₁₂ separately. Complex <b>I</b> is reacted with NaOEt in CH₂Cl₂ and monitored by IR to observe the formation of cluster anion [(Fe₄S₄(CH₂-CH₂)₂)]·^-n (n= 1 to 4). The treatment of 1,2-ethanedithiol with Cp₂TiCl₂ and Na₂[Fe(CO)₄] at room temperature and refluxing condition gives Fe₂(HSCH₂CH₂SH)(CO)₈ (<b>II</b>) and Fe₂(HSCH₂CH₂SH)(CO)₆(<b>III</b>) respectively. The complexes have been characterized by elemental analysis, IR, PMR and mass spectral data.