Synthesis and Crystal Structures of Two New Lanthanide Coordination Polymers with 2,3-Dichlorobenzoic Acid and 4,4′-Bipyridine

Abstract

Two new lanthanide complexes [Ln(2,3-DClBA)₃(CH₃CH₂O)(H₂O)]_2n · n(4,4′-bipy) (Ln = Eu (1),Tb (2); 2,3-DClBA = 2,3-dichlorobenzate; 4,4′-bipy = 4,4′-bipyridine) have been synthesized by aqueous solution synthesis and characterized by elemental analysis and X-ray crystallography analysis. The results showed that complexes 1 and 2 are isostructural and are built of two-dimensional layered structures. Complex 1 belongs to triclinic system, space group P1̄, a = 9.7239(7) Å, b = 12.0736(13) Å, c = 14.6611(12) Å, α = 103.356(2)°, β = 93.0140(10)°, γ = 97.6200(10)°, V = 1653.7(3) ų, Z =1, ρ = 1.735 g/cm³, μ = 18.453 mm⁻¹, F(000) = 850, the final R = 0.0591 and wR = 0.0963 for all data. Complex 2 belongs to triclinic system, space group P1̄, a = 9.6990(7) Å, b = 12.0380(11) Å, c = 14.6060(12) Å, α = 103.274(2)°, β = 93.0930(10)°, γ = 97.4250(10)°, V = 1639.7(2) ų, Z = 1, ρ = 1.764 g/cm³, μ = 2.694 mm⁻¹, F(000) = 854, the final R = 0.0545 and wR = 0.0911 for all data.