Synthesis, structure, and luminescent properties of PrIII complexes with pyrazole-derived 1,3-diketone and 1,10-phenanthroline

Аннотация

The interaction of PrCl₃ with 1,3-bis(1,3-dimethyl-1H-pyrazol-4-yl)-1,3-propanedione in aqueous ethanol in the presence of a base and 1,10-phenanthroline was studied. It was shown that the composition of the products was dependent on the reaction conditions. The solvate [Pr(L)₃(Phen)]•3PrⁱOH crystallizes in a monoclinic crystal system (P2₁/c space group, a = 12.2239(12) Å, b = 20.3403(19) Å, c = 26.134(3) Å, β = 102.380(2)° at 150 K). Absorption spectra of the complex in solution, as well as the spectra and the kinetic parameters of photo-luminescence were investigated.