Herein, we report on investigations of magnetic and spectroscopic properties of three heterobimetallic Fe(ii)-Co(ii) coordination compounds based on the tetracoordinate {CoP2X2} core encapsulated by dppf metalloligand, where X = Cl (1), Br (2), I (3), dppf = 1,1'-ferrocenediyl -bis(diphenylphosphine). The analysis of static magnetic data has revealed the presence of axial magnetic anisotropy in compounds (1) and (2) and this was further confirmed by high-frequency electron spin resonance (HF-ESR) spectroscopy. Dynamic magnetic data confirmed that (1) and (2) behave as field-induced Single-Ion Magnets (SIMs). Together with bulk studies, we have also tested the possibility of depositing (2) as thick films on Au(111), glass, and polymeric acetate by drop-casting as well as thermal sublimation, a key aspect for the development of future devices embedding these magnetic objects.

Central European Institute of Technology CEITEC BUT Purkyňova 656 123 61200 Brno Czech Republic

Central European Institute of Technology CEITEC BUT Purkyňova 656 123 61200 Brno Czech Republic and Department of Inorganic Chemistry Faculty of Science Palacký University 17 listopadu 12 77147 Olomouc Czech Republic

Department of Chemistry Ugo Schiff University of Florence and INSTM Research Unit of Florence via Lastruccia 3 13 50019 Sesto Fiorentino Italy

Department of Inorganic Chemistry Faculty of Science Palacký University 17 listopadu 12 77147 Olomouc Czech Republic

Institute of Physical Chemistry University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany

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Tetracoordinate Co(II) complexes with semi-coordination as stable single-ion magnets for deposition on graphene

Co(II) single-ion magnets: synthesis, structure, and magnetic properties

Deposition of Tetracoordinate Co(II) Complex with Chalcone Ligands on Graphene