Reaction of Octaethylporphyrinato manganese(II) and -iron(II) with Carbon Tetrachloride in the Presence of a Reducing Agent

Abstract

Mansidy showed that (dihalocarbene) (teiraphenylporphyrinato)iron(II) are obtained by the reaction of [Fe^II(tpp)] with carbon tetrahalides in the presence of a reducing agent².⁶. In this work, the reaction behavior of Fe (II) and Mn (II) octaethylporphyrin toward CCl₄ an d CBr₄ were investigated under similar reaction conditions to those used by Mansuy. The reaction of [ Fe^II(oep)] and CCl₄ in the presence of iron powder or NaBH₄ afforded(dichlorocarbene)(octaethylporphyrinato)iron(II)(3) or μ-carbido-bis[octaethylporphyrinatoiron (II)], (2), respectively. The reaction of [Fe^II(oep)] and CBr₄, even in the presence of iron powder afforded (2). (see Table 1 and Fig.1). The are attributed to a stronger reducing power of [Fe^II(oep)] than that of [Fe^II(tpp)].