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Ferrimagnetic Behavior of meso ‐Tetrakis(2,3,5,6‐tetrafluoro‐4‐methoxyphenyl)porphyrinatomanganese (iii) tetracyanoethenide, [MnTF 4 OMePP][tcne]⋅2 PhMe: Structural Evidence for a Second‐Order Crystallographic Phase Transition
Author(s) -
Rittenberg Durrell K.,
Sugiura Kenichi,
Sakata Yoshiteru,
Guzei Ilia A.,
Rheingold Arnold L.,
Miller Joel S.
Publication year - 1999
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/(sici)1521-3765(19990604)5:6<1874::aid-chem1874>3.0.co;2-2
Subject(s) - tetracyanoethylene , ferrimagnetism , sodium borohydride , crystallography , chemistry , phase transition , molecule , infrared , phase (matter) , medicinal chemistry , magnetization , condensed matter physics , organic chemistry , physics , magnetic field , optics , catalysis , quantum mechanics
The quest to identify a new molecule‐based magnet led to the discovery that the reduction of meso ‐tetrakis(pentafluorophenyl)porphyrinatomanganese (iii) chloride, Mn III TF 5 PPCl, with sodium borohydride and its subsequent reaction with tetracyanoethylene (TCNE) forms the magnet [Mn III TF 4 OMePP][tcne]. The structure undergoes a reversible phase transition (see picture) below −100 °C, which is not evident from either the magnetic or infrared data.