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9.
Ni(II) and Cu(II) Complexes with a Nitrogen Donor Tetradentate New
Azamacrocyclic Ligand with Pendent Arms: Synthesis, Spectroscopic
Characterization and Antimicrobial Studies
Sulekh Chandra*a, Deepali Jainb, Anjana
Sarkarc, Anupamaab
(a) Department of Chemistry, Zakir Husain College (University of
Delhi ) JLN Marg New Delhi-110002
(b) Department of chemistry, D.N. College, Meerut, U.P
e-mail:
deepali
101@yahoo.com
(c) NSIT (University of Delhi ),Sector-3, Dwarka
*Corresponding author. E-mail address :
schandra_00@yahoo.com
Abstract:
The
newly synthesized azamacrocyclic ligand L
[2,6,12,16,21,22-hexaaza,4,14-diethyl,3,5,13,15-tetramethyltricyclo-[15,3,1,I7-11]-docosa-1(21),2,5,7,9,11(22),12-15,17,19-decene]
was prepared by the reaction of 3-ethyl-2,4-pentadione and
2,6-diaminopyridine.The complexes of Ni(II) and Cu(II) were
synthesized with this ligand. All the complexes were
characterized by the molar conductance measurements, magnetic
susceptibility measurements, mass, I.R., electronic and EPR
spectral studies. The molar conductance measurement of the
complexes in DMF solution is corresponding to non-electrolytic
nature. Thus these complexes may be formulated as [M(L)X2]
[where, M = Ni(II) and Cu(II) and X = Cl- and NO3-].
On the basis of spectral studies, an octahedral geometry for
Ni(II) complexes and tetragonal for Cu(II) complexes is
assigned. The biological activity of the ligand and complexes
were screened in vitro against different pathogenic fungi and
several bacteria to study their comparative capacity to inhibit
the growth.
Keywords: Spectroscopic, EPR, 2,6-diaminopyridine,
3-ethyl-2,4-pentadione, Ni(II) and Cu(II) complexes.
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