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Characterization of Tetracyanopyridine (TCNPy)‐Based Magnets: V[TCNPy] 2 ⋅ z (CH 2 Cl 2 ) ( T c =111 K) and V[TCNPy] 3 ⋅ z (CH 2 Cl 2 ) ( T c =90 K)
Author(s) -
Hao Jingjun,
Davidson Royce A.,
Kareis Christopher M.,
Kavand Marzieh,
van Schooten Kipp J.,
Boehme Christoph,
Wöß Eva,
Knör Günther,
Miller Joel S.
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201602385
Subject(s) - coercivity , crystallography , analytical chemistry (journal) , magnet , chemistry , spin glass , materials science , physics , condensed matter physics , chromatography , quantum mechanics
The reaction of 2,3,5,6‐tetracyanopyridine (TCNPy) with V(CO) 6 in CH 2 Cl 2 forms new organic‐based magnets of V[TCNPy] x ⋅ z (CH 2 Cl 2 ) ( x =2, 3) composition. Analysis of the IR spectra suggests that the TCNPy is reduced and coordinated to V II sites through the nitriles. V[TCNPy] x order as ferrimagnets with 111 and 90 K T c values for V[TCNPy] 2 and V[TCNPy] 3 , respectively. Their respective remanent magnetizations and coercive fields are 1260 and 250 emuOe mol −1 and 9 and 6 Oe at 5 K, and they exhibit some spin‐glass behavior.