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Synthesis and structural characterization of dinuclear complexes of trivalent aluminum, gallium, indium and chromium derived from pyrazole-2-ethanol

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Title Synthesis and structural characterization of dinuclear complexes of trivalent aluminum, gallium, indium and chromium derived from pyrazole-2-ethanol
 
Creator KALITA, L
WALAWALKAR, MG
MURUGAVEL, R
 
Subject COORDINATION CHEMISTRY
CRYSTAL-STRUCTURE
METAL-COMPLEXES
LIGAND 1-(2-HYDROXYETHYL)-3,5-DIMETHYLPYRAZOLE
MOLECULAR-STRUCTURE
CHELATING LIGANDS
SYSTEMS
POLYMERIZATION
DERIVATIVES
COPPER(II)
Hemilabile ligands
Group 13 elements
Pyrazolate complexes
Crystal structures
 
Description The reaction of 1-(2-hydroxyethyl)-3,5-dimethylpyrazole (HL) with anhydrous metal(III) halides (M = Al, Ga, In and Cr) results in the isolation of four novel dinuclear complexes [Al(mu-L)Cl(2)](2) (1), [Ga(mu-L)Cl(2)](2) (2), [In(mu-L)Br(2)(H(2)O)](2)center dot 2thf (3) and [Cr(mu-L)Cl(2)(H(2)O)](2)center dot 1.5thf (4) in good yields. The new complexes have been characterized with the aid of analytical and spectroscopic studies. A single crystal X-ray structure determination in each case confirms the dimeric structure for all the complexes in the solid-state. The pyrazole ethanol ligand binds to the metal through both pyrazole nitrogen and bridging alkoxide oxygen terminals with the formation of a central M(2)O(2) core involving the ethoxide anion. The metal(III) center is pentacoordinated in compounds 1 and 2, while it is hexacoordinated in compounds 3 and 4. (C) 2011 Elsevier B. V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2012-06-26T07:00:59Z
2012-06-26T07:00:59Z
2011
 
Type Article
 
Identifier INORGANICA CHIMICA ACTA,377(1)105-110
0020-1693
http://dx.doi.org/10.1016/j.ica.2011.07.047
http://dspace.library.iitb.ac.in/jspui/handle/100/14081
 
Language English