Binuclear samarium(III) pivalates with chelating N-donors: Synthesis, structure, thermal behavior, magnetic and luminescent properties

The high-temperature solid-state desolvation under an inert atmosphere was studied for two new polymorphic complexes of the same composition (bath)2Sm2(piv)6·2EtOH (piv = (CH3)3CCO2−, bath = 4,7-diphenyl-1,10-phenanthroline), which differ in the structural functions of the bridging carboxylate anions. This resulted in the synthesis of new non-solvated pivalate (bath)2Sm2(piv)6. The complexes (bath)2Sm2(piv)6·2EtOH (two polymorphic modifications) and (bath)2Sm2(piv)6 were characterized by X-ray diffraction. The solid-state thermal decomposition of binuclear Sm(III) pivalates with heterocyclic chelating N-donors, such as 2,2′-bipyridyl (bpy), 1,10-phenanthroline (phen), and bath, was studied, the composition of the complexes in the gas phase was determined, and the magnetic and luminescent properties were analyzed.

Two new polymorphs of the same composition (bath)2Sm2(piv)6·2EtOH and the product their high-temperature solid-state desolvation (bath)2Sm2(piv)6 were obtained and studied by X-ray diffraction and physicochemical methods.Figure optionsDownload as PowerPoint slide