MacDonnell, Frederick M. published the artcileSterically Encumbered Iron(II) Thiolate Complexes: Synthesis and Structure of Trigonal Planar [Fe(SR)3]– (R = 2,4,6-t-Bu3C6H2) and Moessbauer Spectra of Two- and Three-Coordinate Complexes, Related Products of catalysis-chemistry, the publication is Inorganic Chemistry (1995), 34(7), 1815-22, database is CAplus.
The synthesis and structural characterization of three compounds containing three-coordinate Fe(II) and stabilized by sterically encumbered thiolate ligands are reported. Reaction of [Fe2(SC6H2-2,4,6-t-Bu3)4] (3) with LiSC6H2-2,4,6-t-Bu3 in ether/THF/hexane afforded [Li(THF)2(5)]¡¤0.5C6H14 (5 = [Fe(SC6H2-2,4,6-t-Bu3)3]–). Addition of Ph4PCl to a reaction mixture in toluene followed by recrystallization of the product from MeCN yielded (Ph4P)[5]¡¤2MeCN¡¤C7H8. [Fe3(SC6H2-2,4,6-i-Pr3)4(N(SiMe3)2)2] was prepared by the reaction of [Fe(N(SiMe3)2)2] (6) with the thiol in toluene. [Li(THF)2(5)]¡¤0.5C6H14 crystallizes in monoclinic space group P21/c with a 9.809(2), b 22.507(5), c 29.553(5) ?, ¦Â 95.72(2)¡ã, and Z = 4 (130 K). (Ph4P)[5]¡¤2MeCN¡¤C7H8 was obtained in monoclinic space group P21 with a 17.538(5), b 14.912(4), c 17.608(5) ?, ¦Â 115.71(3)¡ã, and Z = 2 (143 K). These compounds contain the 1st example of mononuclear Fe(II) in a close approach to a trigonal planar [5] or a distorted trigonal planar [Li(THF)2(5)] S coordination environment. In the Ph4P salt, [5] exhibits the mean values Fe-S = 2.274(9) ? and S-Fe-S = 120(3)¡ã, while in [Li(THF)2(5)] the Li+ ion bridges two S atoms, causing a lengthening (0.06-0.07 ?) of the Fe-S bridged bond lengths and constriction of the bridged S-Fe-S angle (92.2(1)¡ã). Compound 6 crystallizes in space group P21/c with a 14.521(5), b 41.60(2), c 14.241(4) ?, ¦Â 100.42(2)¡ã, and Z = 4 (130 K). The structure has a linear Fe3(¦Ì2-SR)4 fragment with an almost linear Fe3 array involving the central Fe(II) atom in a severely distorted tetrahedral environment; the terminal Fe(II) atoms are three-coordinate and planar with terminal N(SiMe3)2 ligands. Complex 5 expands the family of homoleptic mol. Fe(II) thiolates to five structural types; complexes 5 and 6 with two previously reported species [Fe2(SR)4] constitute the known examples of three-coordinate FeII with partial or complete S ligation. The zero-field Moessbauer spectra of examples of the five types of homoleptic Fe(II) thiolates are reported together with several tetrahedral complexes having FeII-S/SR coordination to determine what structural distinctions could be made from isomer shifts and quadrupole splittings. From the limited data set, it is tentatively concluded that trigonal planar FeII(SR)3 can be distinguished from tetrahedral FeII(SR)4 and FeII-S/SR units from its smaller quadrupole splitting (0.81 mm/s for 5 at 4.2-100 K).
Inorganic Chemistry published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Related Products of catalysis-chemistry.
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https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia