Copper(II) complexes derived from (2-carboxymethoxy-phenylamino)acetic acid and analogue
作者:W. Marjit Singh、Joydeb Das、Anirban Karmakar、Jubaraj B. Baruah
DOI:10.1016/j.ica.2008.09.006
日期:2009.4
The synthesis and characterization of mononuclear copper complex of (3-oxo-2,3-dihydrobenzo[1,4]oxazin-4-yl)-acetic acid (1) and a tetranuclear copper complex of (2-carboxymethoxy-phenylamino) acetic acid (2) is reported. The sodium salt 1 on reaction with copper(II) chloride hexahydrate followed by treatment with pyridine gave a mononuclear copper complex; whereas, a tetra-nuclear complex in the case of reaction of 2 with copper(II) chloride hexahydrate and 2,2'-bipyridine was obtained. In tetra-nuclear copper(II) complex the NH group co-ordinates to copper and cluster has five co-ordination around copper(II). (C) 2008 Elsevier B.V. All rights reserved.
Synthesis, characterization, and reactivity of zinc carboxylate complexes of 2,3-pyridine dicarboxylic acid and (3-oxo-2,3-dihydro-benzo[1,4]oxazin-4-yl)acetic acid
作者:W. Marjit Singh、Bigyan R. Jali、Babulal Das、Jubaraj B. Baruah
DOI:10.1016/j.ica.2010.08.045
日期:2011.6
tetrahedral environment and these ligands further hold dinuclear units of tri-aquated sodium ions; each dinuclear sodium units are bridged by one water molecule make the coordination polymer. The catalytic ability of these two complexes 1 and 2 towards carbon–carbonbondformationreactionbetween 3,4-dimethoxy benzaldehyde and acetone are studied. Both the complexes as well as sodium salt of L′ are