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Synthesis and Redox Chemistry of a Homoleptic Iron Arsenic Prismane Cluster
Author(s) -
Riesinger Christoph,
Dütsch Luis,
Scheer Manfred
Publication year - 2022
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202200102
Subject(s) - homoleptic , redox , chemistry , paramagnetism , arsenic , diamagnetism , crystallography , inorganic chemistry , metal , organic chemistry , physics , quantum mechanics , magnetic field
The redox chemistry of the homoleptic iron prismane cluster [{Cp*Fe} 3 (μ 3 ,η 4:4:4 ‐As 6 )] ( A , Cp*=C 5 Me 5 ) is investigated both electrochemically and synthetically. While its first oxidation leads to the diamagnetic species [{Cp*Fe} 3 (μ 3 ,η 4:4:4 ‐As 6 )][X] ( [1][TEF] , [1][FAl] , [TEF] − =[Al{OC(CF 3 ) 3 } 4 ] − , [FAl] − =[FAl{O(1‐C 6 F 5 )C 6 F 10 } 3 ] − ), the second oxidation yields the paramagnetic [{Cp*Fe} 3 (μ 3 ,η 4:4:4 ‐As 6 )][TEF] 2 ( [2][TEF] 2 ). The reduction of A leads to the monoanionic compound [K@[2.2.2]‐cryptand][{Cp*Fe} 3 (μ 3 ,η 4:4:4 ‐As 6 )] ( [K@crypt][3] ), while a second reduction could only be traced spectroscopically. All compounds were comprehensively characterized, revealing the structural changes accompanying the described redox processes. All findings are supported by spectroscopic as well as computational studies.