Research Article

Spectroscopic and Biological Studies on Newly Synthesized Cobalt (II) and Nickel (II) Complexes with 2-Acetyl Coumarone Semicarbazone and 2-Acetyl Coumarone Thiosemicarbazone

Table 4

Antibacterial activity of ligands and metal complexes.

Test organism Diameter of zones of inhibition (mm)
M1 M2 M3 M4 M5 M6 M7 M8 L1 L2Kanamycin

Escherichia  coli 8787131412152222
Klebsiella species6554141614174520
Shigella sonnei 7468121513143425
Bacillus  subtilis 9685121414163323

M1: [Co(SCL)2](Cl)2; M2: [Co(SCL)2](NO3)2; M3: [Ni(SCL)2](Cl)2; M4: [Ni(SCL)2](NO3)2; M5: [Co(TSCL)2](Cl)2; M6: [Co(TSCL)2](NO3)2; M7: [Ni(TSCL)2](Cl)2; M8: [Ni(TSCL)2](NO3)2; L1: SCL; L2: TSCL.