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Journal of Coordination Chemistry Volume 64, 2011 - Issue 14
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Original Articles

Five-coordinate dicarboxylate complexes of copper (+2) and zinc (+2)

Bhaskar Nath Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
,
Dipjyoti Kalita Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
&
Jubaraj B. Baruah Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, IndiaCorrespondence[email protected]
Pages 2545-2553 | Received 28 Apr 2011, Accepted 08 Jun 2011, Published online: 26 Jul 2011
 
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Abstract

A new dicarboxylic acid, LH2 , derived from 2-[(2-hydroxy-3,5-dimethylphenyl) (phenyl)methyl]-4,6-dimethylphenol (1) was prepared by reacting it with methyl bromoacetate followed by alkaline hydrolysis. Two five-coordinate mononuclear complexes of L with zinc (+2) and copper (+2), [Zn(L)(py)2(H2O)] · H2O · py (IV), and [Cu(L)(py)2(H2O)] (V), were prepared (py = pyridine) and characterized. The packing patterns of these two complexes are different and the H-bond interactions in their lattices are controlled by the presence or absence of water molecules. This difference arises from subtle change in the orientation of carbonyl groups of the carboxylates.

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