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Synthesis, Crystal Structure, Fluorescent and Antioxidation Properties of Cerium(III) and Europium(III) Complexes with Bis(3‐methoxysalicylidene)‐3‐oxapentane‐1,5‐diamine
Author(s) -
Tang Xia,
Shi Xinkui,
Xu Yuling,
Shen Kesheng,
Mao Shanshan,
Wu Huilu
Publication year - 2017
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201600434
Subject(s) - chemistry , ligand (biochemistry) , europium , schiff base , diamine , lanthanide , oxalate , fluorescence , photochemistry , cerium , ether , ion , inorganic chemistry , crystallography , polymer chemistry , organic chemistry , physics , quantum mechanics , biochemistry , receptor
Two aliphatic ether Schiff base lanthanide complexes ( Ln = Eu, Ce) with bis(3‐methoxysalicylidene)‐3‐oxapentane‐1,5‐diamine (Bod), were synthesized and characterized by physicochemical and spectroscopic methods. [Eu(Bod)(NO 3 ) 3 ] ( 1 ) is a discrete mononuclear species and [Ce(Bod)(NO 3 ) 3 DMF] ∞ ( 2 ) exhibits an inorganic coordination polymer. In the two complexes, the metal ions both are ten‐coordinated and the geometric structure around the Ln III atom can be described as distorted hexadecahedron. Under excitation at room temperature, the red shift in the fluorescence band of the ligand in the complexes compared with that of the free ligand can be attributed to coordination of the rare earth ions to the ligand. Moreover, the antioxidant activities of the two complexes were investigated. The results demonstrated that the complexes have better scavenging activity than both the ligand and the usual antioxidants on the hydroxyl and superoxide radicals.