Hybrid organic-inorganic magnets are molecule-based magnets obtained by means of organic, organometallic or coordination chemistry methods. The interest in such magnets is twofold, from both the basic and applied research perspectives. The roomtemperature hybrid organic-inorganic magnets are interesting due to the potential use in non-traditional applications. We discuss in this paper the magnetic properties of two families of high temperature molecular magnets and hint on their potential applications. One family of such hybrid organic-inorganic compounds is M(TCNE)2, (M = V, Fe, Mn and TCNE = tetracyanoethylene) the other consists of chromium-based Prussian blue analogues, with the general formula of KnCrx[Cr(CN)6].

Keywords: Molecular magnets, Hybrid organic-inorganic magnets, Bistability, Spin crossover, Magnetic shielding, Antireflection coatings, Microwave absorbers.