title: Synthesis, structural characterization and conversion of dinuclear iron-sulfur clusters containing the disulfide ligand: [Cp*Fe(μ-η2:η2-bdt)(cis-μ-η1:η1-S2)FeCp*], [Cp*Fe(μ-S(C6H4S2))(cis-μ-η1:η1-S2)FeCp*], and [{Cp*Fe(bdt)}2(trans-μ-η1:η1-S2)].
abstract: The treatment of [Cp*Fe(μ-η2:η4-bdt)FeCp*] (1, Cp* = η5-C5Me5, bdt = benzene-1,2-dithiolate) with 1/4 equiv. of elemental sulfur (S8) gave a dinuclear iron-sulfur cluster [Cp*Fe(μ-η2:η2-bdt)(cis-μ-η1:η1-S2)FeCp*] (2), which contains a cis-1,2-disulfide ligand. When complex 2 further interacted with 1/8 equiv. of S8, another sulfur atom inserted into an Fe-S bond to give a rare product [Cp*Fe(μ-S(C6H4S2))(cis-μ-η1:η1-S2)FeCp*] (3). Unexpectedly, a trans-1,2 disulfide-bridged diiron complex [{Cp*Fe(bdt)}2(trans-μ-η1:η1-S2)] (4) was isolated from the reaction of complex 1 with 1/2 equiv. of S8, which represents a structural isomer of [2Fe-2S] ferredoxin-type clusters. In addition, cis-1,2-disulfide-bridged complex 3 can slowly convert into trans-1,2-disulfide-bridged complex 4 and the complex [Cp*Fe(μ-η2:η2-S2)(cis-μ-η1:η1-S2)FeCp*] (5) by self-assembly reaction at ambient temperature, which is evidenced by time-dependent1H NMR spectroscopy.
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, P.R. China. qujp@dlut.edu.cn yangdw@dlut.edu.cn.
authors.forename: Xiaoxiao
authors.initials: X
authors.lastname: Ji
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, P.R. China. qujp@dlut.edu.cn yangdw@dlut.edu.cn.
authors.forename: Peng
authors.initials: P
authors.lastname: Tong
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, P.R. China. qujp@dlut.edu.cn yangdw@dlut.edu.cn.
authors.forename: Dawei
authors.initials: D
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, P.R. China. qujp@dlut.edu.cn yangdw@dlut.edu.cn.
authors.forename: Baomin
authors.initials: B
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, P.R. China. qujp@dlut.edu.cn yangdw@dlut.edu.cn.
authors.forename: Jinfeng
authors.initials: J
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, P.R. China. qujp@dlut.edu.cn yangdw@dlut.edu.cn.
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, P.R. China. qujp@dlut.edu.cn yangdw@dlut.edu.cn and Key Laboratory for Advanced Materials, East China University of Science and Technology, Shanghai, 200237, P.R. China.
authors.forename: Jingping
authors.identifier: http://orcid.org/0000-0002-7576-0798
authors.initials: J
authors.lastname: Qu