Synthesis and some reactions of Fe(CO) 2(dppe)(SR) 2 and Fe 3(CO) 6(SAr) 6 complexes. The crystal structure of cis, cis,cis-Fe(CO) 2(dppe)(SPh) 2

Abstract

The complexes Fe(CO) 2(dppe)(SR) 2(dppe)  Ph 2PCH 2CH 2PPh 2; R  s-Bu, Ph, p-C 6H 4Me, p-C 6H 4OMe, p-C 6H 4NHC(O)Me) have been synthesized from Fe 2+ salts by treatment with CO in the presence of dppe and RS − and the crystal structure of the Fe(CO)(dppe)(SPh) 2 derivative has been determined. The ligands occupy cis,cis,cis positions and there are two enantiomeric molecules in the asymmetric unit (space group P 1 − ) of the crystal. The Fe(CO) 2(dppe)(SR) 2 complexes from 1 2 adducts with HgCl 2. In the abscence of dppe, methanol solutions of Fe 2+ and ArS − ( 1 2 ; Ar  Ph, p-C 6H 4Me, p-C 6H 4Me, p-C 6H 4OMe) take up CO to give the trinuclear thiolato complexes Fe 3(CO) 6(SAr) 6.