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Field‐Induced Slow Magnetic Relaxation in Mononuclear Tetracoordinate Cobalt(II) Complexes Containing a Neocuproine Ligand
Author(s) -
Smolko Lukáš,
Černák Juraj,
Kuchár Juraj,
Rajnák Cyril,
Titiš Ján,
Boča Roman
Publication year - 2017
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.201700293
Subject(s) - tetracoordinate , chemistry , relaxation (psychology) , crystallography , antiferromagnetism , magnetization , ligand (biochemistry) , cobalt , single crystal , magnetic field , condensed matter physics , inorganic chemistry , planar , receptor , psychology , social psychology , biochemistry , physics , computer graphics (images) , quantum mechanics , computer science
The mononuclear tetracoordinate [Co(dmphen)X 2 ] (dmphen = 2,9‐dimethyl‐1,10‐phenanthroline = neocuproine; X = Cl, Br, I) complexes were prepared by a solvothermal method. X‐ray diffraction experiments showed that they possess analogous molecular structures, even though the chlorido complex crystallizes in a different crystal system and space group. The crystal structures of the complexes are stabilized by π–π interactions. Alternating‐current (AC) susceptibility measurements show that the bromido and iodido complexes behave as field‐induced single‐molecule magnets with several slow relaxation channels, whereas the chlorido complex exhibits antiferromagnetic interactions and does not display slow relaxation of magnetization.