Synthesis and Physicochemical Properties of the Complexes of Co(II), Ni(II), and Cu(II) with Chrysin

New solid complex compounds of Co(II), Ni(II), and Cu(II) with chrysin were obtained. Their composition and some physicochemical properties were studied (thermogravimetric analysis, ultraviolet, visible and infrared spectroscopy, magnetic properties). During heating, the hydrated complexesM(C15H9O4)2·nH2O lose some crystallization water molecules in one or two steps, and then decompose to the oxides. A structure for the compounds was proposed.