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A new La(Ⅲ) complex, {[La(L)(NO3)(H2O)3]·H2O}n (L = 1,10-phenanthroline- 2,9-dicarboxylate), has been synthesized and structurally determined by X-ray diffraction analysis. The complex crystallizes in the monoclinic system, space group P21/c with a = 7.7358(17), b = 8.1664(18), c = 28.271(6) , β = 95.184(4)°, V = 1778.6(7)3, Z = 4, C14H14LaN3O11, Mr = 539.19, Dc = 2.014 g/cm3, μ = 2.471 mm–1, F(000) = 1056, the final R = 0.0350 and wR = 0.0659. In this complex, each metal center adopts a ten-coordination geometry formed by two N atoms from a ligand L and eight O atoms from three H2O molecules, a nitrate ion and carboxylates of two ligands. Each ligand adopts a N2,O3-pentdentate coordination mode using two N and two O atoms chelating a La(III), and using another O atom of carboxylate to bridge another La(III) center resulting in a 1D helical chain molecule. Intermolecular strong O–H···O and weak C–H···O hydrogen bonds extend the 1D chain structure into a 3D supramolecular architecture.
A new La (III) complex, {[La (L) (NO 3) (H 2 O) 3] · H 2 O} n (L = 1,10-phenanthroline-2,9-dicarboxylate), has been synthesized and structurally determined by X The complex crystallizes in the monoclinic system, space group P21 / c with a = 7.7358 (17), b = 8.1664 (18), c = 28.271 6, β = 95.184 (4) °, V = 1778.6 (7) 3, Z = 4, C14H14LaN3O11, Mr = 539.19, Dc = 2.014 g / cm3, μ = 2.471 mm-1, F (000) = 1056, the final R = 0.0350 and wR = this complex, each metal center adopts a ten-coordinated geometry formed by two N atoms from a ligand L and eight O atoms from three H2O molecules, a nitrate ion and carboxylates of two ligands. Each ligand adopts a N2, O3-pentdentate coordination mode using two N and two O atoms chelating a La (III), and using another O atom of carboxylate to bridge another La (III) center resulting in a 1 D helical chain molecule. Intermolecular strong O-H O and weak C- H ··· O hydrogen bonds extend the 1D chain structure into a 3D supra molecular architecture.