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Cross‐Linked Layered Structure of Magnetically Ordered [Fe(TCNE) 2 ]⋅ z CH 2 Cl 2 Determined by Rietveld Refinement of Synchrotron Powder Diffraction Data
Author(s) -
Her JaeHyuk,
Stephens Peter W.,
Pokhodnya Konstantin I.,
Bonner Michael,
Miller Joel S.
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200604164
Subject(s) - tetracyanoethylene , crystallography , diamagnetism , synchrotron , rietveld refinement , octahedron , materials science , x ray crystallography , spin (aerodynamics) , coupling (piping) , chemistry , diffraction , crystal structure , physics , optics , metallurgy , magnetic field , organic chemistry , quantum mechanics , thermodynamics
The wages of spin : Insight into the elusive structure of [V(TCNE) x ]‐based magnets is provided by the structural analysis of the title compound ( T c ≈100 K; TCNE=tetracyanoethylene; z ≈0.3), in which {Fe II (μ 4 ‐[TCNE]) .− } layers are bridged by diamagnetic TCNE dimers μ 4 ‐[C 4 (CN) 8 ] 2− (see picture; Fe gold; C black; N blue). Strong intralayer spin coupling between the Fe II centers leads to the observed magnetic ordering.