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A complex [Sm(2-IBA)2(2,2’-bipy)(NO3)]2 (2-HIBA=2-idobenzoic acid; 2,2’-bipy=2,2’-bipyridine) was synthesized by solvent method and characterized by X-ray single-crystal diffraction. The complex crystallized in triclinic crystal system, Pī space group, with a= 0.97873(3) nm, b=1.28124(3) nm, c=1.29174(3) nm, α=108.3740(10)o, β=111.7340(10)o, γ=101.7870(10)o. The complex was the centrosymmetric binuclear molecule, in which two Sm3+ ions were connected by four 2-IBA ligands. Two of the 2-IBA ligands were in a bidentate bridging mode and the other two were in a tridentate bridging mode. Sm3+ ion was also coordinated to one chelating NO3- group and one 2,2’-bipy molecule. The 2D supramolecular network formed through weak I…I interactions and π…π stacking interactions. The fluorescent emission peaks at 562, 595, and 642 nm corresponded to the 4G5/2→6F5/2, 4G5/2→6F7/2, and 4G5/2→6F9/2 transitions of Sm3+ ion, respectively.
A complex [Sm (2-IBA) 2 (2,2’-bipy) (NO3)] 2 (2-HIBA = 2-idobenzoic acid; The complex crystallized in triclinic crystal system, with a = 0.97873 (3) nm, b = 1.28124 (3) nm, c = 1.29174 (3) nm, α = 108.3740 (10) o, β = 111.7340 (10) o, γ = 101.7870 (10) o. The complex was the centrosymmetric binuclear molecule, in which two Sm3 + ions were connected by four 2-IBA ligands. -IBA ligands were in a bidentate bridging mode and the other two were in a tridentate bridging mode. Sm3 + ion was also coordinated to one chelating NO3-group and one 2,2’-bipy molecule. The 2D supramolecular network formed through weak I I fluorescent interactions and π ... stacking interactions. The fluorescent emission peaks at 562, 595, and 642 nm are corresponded to the 4G5 / 2 → 6F5 / 2, 4G5 / 2 → 6F7 / 2, and 4G5 / 2 → 6F9 / 2 transitions of Sm3 + ion, respectively.