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The [Fe{(SePPh 2 ) 2 N} 2 ] Complex Revisited: X‐ray Crystallography, Magnetometry, High‐Frequency EPR, and Mössbauer Studies Reveal Its Tetrahedral Fe II Se 4 Coordination Sphere
Author(s) -
Ferentinos Eleftherios,
Chatziefthimiou Spyros,
Boudalis Athanassios K.,
Pissas Michael,
Mathies Guinevere,
Gast Peter,
Groenen Edgar J. J.,
Sanakis Yiannis,
Kyritsis Panayotis
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201701459
Subject(s) - electron paramagnetic resonance , crystallography , mössbauer spectroscopy , coordination sphere , magnetometer , tetrahedron , chemistry , hyperfine structure , materials science , crystal structure , nuclear magnetic resonance , magnetic field , physics , atomic physics , quantum mechanics
The synthesis and characterization of complex [Fe{(SePPh 2 ) 2 N} 2 ] ( 1 ) is described. X‐ray crystallography shows that this system contains a tetrahedral FeSe 4 coordination sphere. The structural features of 1 are compared with those of similar first row transition element complexes, including a recently reported preparation of [Fe{(SePPh 2 ) 2 N} 2 ] ( 1 SP ) exhibiting a highly unusual square planar FeSe 4 coordination sphere. The electronic structure of 1 was elucidated by magnetometry, high‐frequency EPR, and Mössbauer spectroscopic studies, which reveal zero‐field splitting (ZFS) parameters typical of high spin S = 2 tetrahedral Fe II sites. Accurate ZFS parameters ( D = +8.22 cm –1 , E/D = 0.104) were obtained by analysis of the EPR spectra and compared with those of the analogous [Fe{(SPPh 2 ) 2 N} 2 ] complex.
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