Comparison of some properties of Cu(II) 2,3- , 3,5- and 2,6-dimethoxybenzoates
Data(s) |
01/01/2006
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Resumo |
The physico-chemical properties and thermal stability in air of Cu(II) 2,3- , 3,5- and 2,6-dimethoxybenzoates were compared and the influence of the position of -OCH3 substituent on their thermal stability was investigated. The complexes are crystalline, hydrated salts with blue colour. The carboxylate ion is a bidentate chelating or bridging group. The thermal stability of analysed Cu(II) dimethoxybenzoates was studied in the temperature range of 293-1173 K. The positions of methoxy- groups in benzene ring influence the thermal properties of studied complexes. Their different thermal properties are markedly connected with the various influence of inductive, mesomeric and steric effects of -OCH3 substituent on the electron density in benzene ring. The magnetic susceptibilities of the complexes were measured over the range of 76-300 K and the magnetic moments were calculated. The results show that they form dimers. |
Formato |
text/html |
Identificador |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702006000300001 |
Idioma(s) |
en |
Publicador |
Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP |
Fonte |
Eclética Química v.31 n.3 2006 |
Palavras-Chave | #dimethoxybenzoates #complexes of Cu(II) #magnetic moments #thermal behavior #FTIR spectra |
Tipo |
journal article |