Coordination chain polymeric assemblies of trivalent lanthanides with multidentate Schiff base synthetic, spectral investigation and thermal aspects

Third generation fluoroquinolones antibacterial drug based mixed-ligand Cu(II) complexes: structure, antibacterial activity, superoxide dismutase activity and DNA–interaction approach

“…The ν(C=O) stretching vibration band for pefloxacin and sparfloxacin appeared at 1716 and 1728 cm −1 , respectively. While in the complexes this band was shifted at ∼1625 cm −1 ; this shift in band towards lower energy suggested that coordination occurs through the pyridone oxygen atom [38]. These data are further supported by the ν(M-O) [39] which appeared at ∼517 cm −1 for the complexes.…”

Antibacterial and DNA interaction studies of zinc(II) complexes with quinolone family member, ciprofloxacin

“…For Zn(II) complexes a loss in weight was seen corresponding to a piperazine (pip) molecule in the temperature range 180-250 C, followed by liberation of Cip. (L) in the temperature range 250-500 C. Finally, decomposition of A n occurred in the temperature range 520-800 C, and the remaining weight was consistent with metal oxide [34]. Probable structure of the complexes from the above analytical facts is given in Fig.…”

DNA cleavage, binding and intercalation studies of drug-based oxovanadium(IV) complexes

“…spectrophotometer, Shimadzu (Japan) ( Table III) Thermal analysis. The thermogravimetric analyses for the mixed-ligand complexes were carried out within a temperature range from 20-8008C in N 2 atmosphere at a rate of 108C per minute in order to establish their compositional differences as well as to ascertain the nature of associated water molecules [29]. The determined temperature ranges and corresponding percent mass loss accompanying the changes in the mixed-ligand complexes on heating revealed the following things.…”