TY - JOUR
T1 - Synthesis, characterization and antimicrobial activity of homodinuclear complexes derived from 2,6-bis[3′-methyl- 2′- carboxamidyliminomethyl(6′,7′)benzindole]-4-methylphenol, an end-off compartmental ligand
AU - Jadegoud, Y.
AU - Ijare, Omkar B.
AU - Somashekar, B. S.
AU - Gowda, G. A.Nagana
AU - Mruthyunjayaswamy, B. H.M.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008
Y1 - 2008
N2 - End-off compartmental pentadentate Schiff base, 2,6-bis[3′-methyl- 2′-carboxamidyliminomethyl(6′,7′)benzindole]-4-methylphenol is synthesized and characterized by 2D NMR experiments and mass spectral techniques. The homodinuclear phenalato bridged end-off compartmental Schiff-base complexes Cu(II), Co(II), Ni(II), Mn(II), Fe(III), VO(IV), Zn(II), Cd(II) and Hg(II) have been prepared by the template method using the precursors 2,6-diformyl-4-methylphenol, 3-methyl(6′,7′)-2-benzindolehydrazide and metal chlorides in 1 : 2 : 2 ratio. The complexes are characterized by IR, NMR, UV-vis, FAB-mass, ESR and TGA techniques. Ni(II), Mn(II) and Fe(III) complexes have octahedral geometry, whereas the Cu(II), Co(II), VO(IV), Zn(II), Cd(II) and Hg(II) complexes have square pyramidal geometry. Low magnetic moment values for Cu(II), Co(II), Ni(II), Mn(II), Fe(III) and VO(IV) complexes indicate antiferromagnetic spin-exchange interaction between two metal centers. The metal complexes have been screened for their antibacterial activity against Escherichia coli and Staphyloccocus aureus and antifungal activity against Aspergillus niger and Fusarium oxysporum.
AB - End-off compartmental pentadentate Schiff base, 2,6-bis[3′-methyl- 2′-carboxamidyliminomethyl(6′,7′)benzindole]-4-methylphenol is synthesized and characterized by 2D NMR experiments and mass spectral techniques. The homodinuclear phenalato bridged end-off compartmental Schiff-base complexes Cu(II), Co(II), Ni(II), Mn(II), Fe(III), VO(IV), Zn(II), Cd(II) and Hg(II) have been prepared by the template method using the precursors 2,6-diformyl-4-methylphenol, 3-methyl(6′,7′)-2-benzindolehydrazide and metal chlorides in 1 : 2 : 2 ratio. The complexes are characterized by IR, NMR, UV-vis, FAB-mass, ESR and TGA techniques. Ni(II), Mn(II) and Fe(III) complexes have octahedral geometry, whereas the Cu(II), Co(II), VO(IV), Zn(II), Cd(II) and Hg(II) complexes have square pyramidal geometry. Low magnetic moment values for Cu(II), Co(II), Ni(II), Mn(II), Fe(III) and VO(IV) complexes indicate antiferromagnetic spin-exchange interaction between two metal centers. The metal complexes have been screened for their antibacterial activity against Escherichia coli and Staphyloccocus aureus and antifungal activity against Aspergillus niger and Fusarium oxysporum.
KW - Antiferromagnetic
KW - Benzindole
KW - End-off
KW - Phenalato bridged
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U2 - 10.1080/00958970701362523
DO - 10.1080/00958970701362523
M3 - Article
AN - SCOPUS:39349109236
SN - 0095-8972
VL - 61
SP - 508
EP - 527
JO - Journal of Coordination Chemistry
JF - Journal of Coordination Chemistry
IS - 4
ER -