Akademik Veri Yönetim Sistemi
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, cilt.103, sa.3, ss.995-1000, 2011 (SCI-Expanded)
The complexes were synthesized by the reaction between sodium salt of p-aminosalicylic acid (PAS) and Cu(II) for 1 and corresponding ethylenediamine (en) or its derivatives for 2-6. The complexes were characterized by using elemental analyses, FT-IR, UV-Vis, magnetic moment measurements, and thermal analyses techniques. In complex 1[Cu-2(PA)(4)(H2O)(2)], two Cu(II) ions were found as bridged by four mu-O:O' p-aminosalicylato (PA) ligands, forming a cage structure, and two aqua ligands to form dinuclear square-pyramidal geometry around Cu(II) ions. In the complexes 2-6, the PA (anionic form of p-aminosalicylic acid) coordinated to Cu(II) ions as monodentate manner by using its oxygen atom of deprotonated carboxylic acid and ethylenediamine derivatives coordinated to the Cu(II) ions in bidentate manner to form mononuclear octahedral complexes [Cu(PA)(2)(L)(2)] (L = ethylendiamine, N,N-dimethylethylendiamine, N,N'-dimethylethylendiamine, N,N,N',N'-tetramethylethylendiamine, and 1,3-propanediamine, for complexes 2, 3, 4, 5, and 6, respectively). In all the complexes OH and NH2 groups of PA ligands were not coordinated to metals.