Abstract
The mononuclear tetracoordinate [Co(dmphen)X2] (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.
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