Magnetic, thermal and spectral characterization of 2,4-dimethoxybenzoates of Mn(II), Co(II) and Cu(II)
Data(s) |
01/01/2007
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Resumo |
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. |
Formato |
text/html |
Identificador |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702007000300001 |
Idioma(s) |
en |
Publicador |
Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP |
Fonte |
Eclética Química v.32 n.3 2007 |
Palavras-Chave | #2,4-dimethoxybenzoates #magnetic properties of Mn(II), Cu(II), Co(II) and Nd(III) #thermal stability #IR spectra |
Tipo |
journal article |