Mascharak, P. K. published the artcileStructural distortions of the [Fe4S4]2+ core of [Fe4S4(S-tert-C4H9)4]2- in different crystalline environments and detection and instability of oxidized ([Fe4S4]3+) clusters, Name: 2-Methyl-2-sulfanylpropan-1-ol, the publication is Inorganica Chimica Acta (1983), 80(3), 157-70, database is CAplus.
The structural and redox chem. of the clusters [Fe4S4(SR)4]2- with R = tert-alkyl were investigated for the purpose of determining the structures of the same cluster in different environments and the stability of the oxidized species [Fe4S4(SR)4]1-. (Me3NCH2Ph)2[Fe4S4(S-tert-Bu)4] crystallizes in the monoclinic space group P21/c with no imposed symmetry. (Et4N)2[Fe4S4(S-tert-Bu)4] crystallizes in the tetragonal space group I4̅2m with D2d symmetry imposed on the cluster. The [Fe4S4]2+ cluster cores in both compounds exhibit compressed tetragonal structures with different extents of distortion from Td symmetry. These structures are compared to those of other [Fe4S4]2+ clusters by means of core shape parameters. Clusters with R = tert-alkyl (tert-Bu, C(CH3)2CH2OH, C(CH3)2CH2NHPh) in DMF exhibit, in addition to the usual 2-/3- and 3-/4- redox reactions common to all [Fe4S4(SR)4]2- species, discrete 1-electron oxidations near -0.1 V vs. SCE. Cyclic voltammetry of [Fe4S4(S-tert-Bu)4]2- reveals an essentially reversible 1-/2- couple with E1/2 = -0.12 V, supporting the authenticity of clusters containing an oxidized ([Fe4S4]3+) core. This couple cannot be electrochem. resolved from multi-electron oxidation in the case of clusters in DMF with other types of R substituents, a behavior apparently due to cathodic potential shifts by tert-alkyl groups. Stability of oxidized clusters is low, and [Fe4S4(S-tert-Bu)4]1- could not be generated in appreciable concentrations at longer times by coulometric or chem. oxidation The relative stabilities of analog and protein [Fe4S4]3+ clusters are discussed. Preparations of 4 new [Fe4S4(SR)4]2- cluster salts are described including water-soluble (Et4N)2[Fe4S4(SC(CH3)2CH2OH)4].
Inorganica Chimica Acta published new progress about 73303-88-5. 73303-88-5 belongs to alcohols-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Alcohol, name is 2-Methyl-2-sulfanylpropan-1-ol, and the molecular formula is C4H10OS, Name: 2-Methyl-2-sulfanylpropan-1-ol.
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