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Spin Polarization and Ferromagnetism in Two‐Dimensional Sheetlike Cobalt( II ) Polymers: [Co(L) 2 (NCS) 2 ] (L=Pyrimidine or Pyrazine)
Author(s) -
Lloret Francesc,
De Munno Giovanni,
Julve Miguel,
Cano Juan,
Ruiz Rafael,
Caneschi Andrea
Publication year - 1998
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/(sici)1521-3773(19980202)37:1/2<135::aid-anie135>3.0.co;2-4
Subject(s) - pyrazine , cobalt , ferromagnetism , pyridazine , antiferromagnetism , pyrimidine , crystallography , monomer , chemistry , polymer , methanol , polarization (electrochemistry) , materials science , stereochemistry , inorganic chemistry , condensed matter physics , physics , organic chemistry
Intralayer antiferromagnetic and ferromagnetic couplings could be correctly predicted by the spin polarization mechanism for the sheetlike polymers [Co(NCS) 2 (pyz) 2 ] n and [Co(NCS) 2 (pym) 2 ] n (structure depicted on the right). These structurally characterized compounds and the monomeric complex [Co(NCS) 2 (pyd) 4 ], which was synthesized for comparison, were obtained from solutions containing Co(NCS) 2 and pyrazine (pyr), pyrimidine (pym), or pyridazine (pyd) in methanol.