SULFUR-HYDROGEN BOND ACTIVATION OF THIOLS BY THE FRAGMENT CPFE(DPPE)(- CYCLOPENTADIENYL IRON(III) THIOLATE COMPLEXES() )

Oxidative addition of thiols RSH, R = CH3, CH2C-H2CH3, CH2C6H5, C(CH3) (3) and C6H4Br, by the complex [CpFe(dppe)1] afforded the oxidized thi olate complexes [CpFe(dppe)-SR]PF6. The reaction of [CpFe(dppe)1] with HSC6H4NH2 produces the diamagnetic [CpFe(dppe)HSC6H4NH2]PF6 instead o f the expected thiolate product. The reaction of the dithiol HS(CH2)(4 )SH with the same iron fragment, gives the binuclear complex [CpFe(dpp e)-S(CH2)(2)S-CpFe(dppe)][PF6](2). The formation of the thiol-containi ng complexes as intermediates in the activation of the S-H bonds is di scussed. Copyright (C) 1997 Elsevier Science Ltd.