Research Article

Spectroscopic Characterization and Biological Activity of Mixed Ligand Complexes of Ni(II) with 1,10-Phenanthroline and Heterocyclic Schiff Bases

Table 4

Antimicrobial activity of ternary complexes.

ComplexE.  coliP.  aeruginosaR.  oryzaeA.  niger

MIIMP+++
Ni (MIIMP)2 (H2O)2 ++++
Ni (1,10-phen) (MIIMP) (H2O)2 Cl+++++++
CMIIMP++++
Ni (CMIIMP)2 (H2O)2 ++
Ni (1,10-phen) (CMIIMP) (H2O)2 Cl+++++
EMIIMP++++
Ni (EMIIMP)2 (H2O)2 ++++++++
Ni (1,10-phen) (EMIIMP) (H2O)2 Cl++++++++
MIIMNP++++
Ni (MIIMNP)2 (H2O)2 ++++++++
Ni (1,10-phen) (MIIMNP) (H2O)2 Cl++++++
MEMIIMP++
Ni (MEMIIMP)2 (H2O)2 ++++
Ni (1,10-phen) (MEMIIMP) (H2O)2 Cl++++
MIIMMP++++
Ni (MIIMMP)2 (H2O)2 ++++
Ni (1,10-phen) (MMIIMP) (H2O)2 Cl+++++
BMIIMP+
Ni (BMIIMP)2 (H2O)2 +++++
Ni (1,10-phen) (BMIIMP) (H2O)2 Cl+++++
MIIBD++++
Ni (MIIBD)2 (H2O)2 ++++
Ni (1,10-phen) (MIIBD) (H2O)2 Cl+++++++
Gentamycin++++

Highly active: +++ (inhibition zone > 15 mm); moderatively active: ++ (inhibition zone > 10 mm); slightly active: + (inhibition zone > 5 mm); inactive: − (inhibition zone < 5 mm ).