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Four novel lanthanide complexes [La2(2,4-DClBA)6(5,5-DM-2,2-bipy)2(H2O)2]·2C2H5OH(1)and [Ln(2,4-DClBA)3(5,5-DM-2,2-bipy)(C2H5OH)]2(Ln = Pr(2),Sm(3),Gd(4); 2,4-DClBA: 2,4-dichlorobenzoate; 5,5-DM-2,2-bipy: 5,5-Dimethyl-2,2-bipyridine)were synthesized by conventional solution method and characterized via elemental analysis,Infrared spectra and thermogravimetric technology(TG).