Zr(IV), La(III), and Ce(IV) Chelates with 2-[(4-[(Z)-1-(2-Hydroxyphenyl)ethylidene]aminobutyl)-ethanimidoyl]phenol: Synthesis, Spectroscopic Characterization, and Antimicrobial Studies
Table 4
Effect of used salts and Schiff base and its chelates on bacteria growth.
S.N
Comp.
Diameter of inhibition zone (6 mm); concentration in μg/mL
Gram positive organisms
Lactobacillus fermentum
Streptococcus faecalis
% Activity index
% Activity index
5 μg/mL
50 μg/mL
500 μg/mL
5 μg/mL
50 μg/mL
500 μg/mL
5 μg/mL
50 μg/mL
500 μg/mL
5 μg/mL
50 μg/mL
500 μg/mL
1B
HAPH
5
8
10
13
20
25
0
1
2
0
3
6
2B
BD
11
14
18
28
35
45
1
3
11
3
9
31
3B
ZrOCl2·8H2O
0
0
16
0
0
40
0
0
0
0
0
0
4B
La·6H2O
0
0
16
0
0
40
0
7
15
0
20
43
5B
Ce·4H2O
0
9
15
0
23
38
8
13
16
23
37
46
1C
SB
0
0
0
0
0
0
0
3
6
0
9
17
2C
La(III) chelate
0
0
0
0
0
0
0
2
16
0
6
46
3C
Zr(IV) chelate
0
0
0
0
0
0
0
0
9
0
0
26
4C
Ce(IV) chelate
0
0
0
0
0
0
0
0
0
0
0
0
C
DMSO (Control)
0
0
0
0
0
0
0
0
0
0
0
0
CIP
Ciprofloxacin (Standard)
40
40
40
100
100
100
35
35
35
100
100
100
HAPH (o-hydroxyacetophenone), BD (1,4-butanediamine), *microgram per mL. = C − T/C × 100.
