Magnetic, thermal and spectral characterization of 2,4- dimethoxybenzoates of Mn(II), Co(II) andCu(II).

• Main Authors: W. Ferenc, K Czapla, J. Sarzy
• Format: Article
• Language: English
• Published: Universidade Estadual Paulista 2018-09-01
• Series: Eclética Química
• Online Access: https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/997

2,4 - Dimethoxybenzoates of Mn(II), Co(II) and Cu(II) have been synthesized as hydrated or anyhydrous polycrystalline solids and characterized by elemental analysis, IR spectroscopy, magnetic studies and X-ray diffraction measurements. They possess the following colours: Mn(II) – white, Co(II) – pink and Cu(II) – blue. The carboxylate groups bind as monodentate, or a symmetrical bidentate bridging ligands and tridentate. The thermal stabilities were determined in air at 293-1173K. When heated the hydrated complexes dehydrate to from anhydous salts which are decomposed to the oxides of respective metals. The magnetic susceptibilites of the 2,4-dimethoxybenzoates were measured over the range 76-303 K and their magnetic moments were calculated. The results reveal the complexes of Mn(II), Co(II) to be high-spin complexes and that of Cu(II) to form dimer.