Synthesis, Crystal Structure and Fluorescence Spectrum of a Europium Compound [Eu(NO3)3(H2O)4]·(C_(10)H9N2)2·NO3)2

摘要

Aeuropium compound with the general molecular composition [Eu(NO3)3(H2O)4]·(C_(10)H9N2)2·(NO3)2 was synthesized from 4,4-bipyridyl and Eu{NO3)3·6H2O in ethanol and characterized by elemental analysis, molar conductance, IR, TG and X-ray crystallographically. The single-crystal X-ray diffraction studies demonstrated that compound is crystallize in triclinic system, space group P_i, with a = 0,8112(3) nm, b = 1.2797(3) nm, c = 1.5164(2) nm, α = 95.158°, β = 101.732°, γ = 100.174°, V = 1.504(2) nm~3, Z = 2, M_r = 848.46. F_((000)) = 848.0, D_c =1.873 g cm~(-3), μ (M0K_α) = 1.056 mm~(-1). It turned out that three nitrate anions coordinate to Eu(III) as bidentate and four water molecules coordinate to Eu(III), forming a ten-coordination distorted dicapped square antiprism geometry. In addition, the luminescent property and fluorescence quenching interaction with EB-DNA have been studied. CCDC: 871243.