Synthesis, X-ray structure and luminescent properties of Sm 3+ ternary complex with novel heterocyclic β-diketone and 1,10-phenanthroline (Phen)

Abstract

A new neutral ternary samarium complex Sm(Phen)HL 3 in which Phen is 1,10-phenanthroline and HL is (1,3-bis(1,3-dimethyl-1H-pyrazol-4-yl)-1,3-propanedione) was synthesized. Molecular structure of this complex was determined by X-ray diffraction. Under UV-light this complex is demonstrated bright red luminescence ( λ max=647 nm), which was corresponding to the electric dipole 4G 5/2→ 6H 9/2 transition in Sm 3+ ion. UV-absorption, excitation and emission spectra of the title compound were investigated.