Synthesis and Characterization of Schiff Base Metal Complexes Derived from Cefotaxime with 1<i>H</i>-indole-2,3-dione (Isatin) and 4-N,N-dimethyl-aminobenzaldehyde

Synthesis, Characterization and Antimicrobial Evaluation of Co(II), Ni(II) and Cu(II) Schiff base complexes of (Z)-4-(1-pyridin-4-ylimino)propyl)phenol

“…This can be attributed to the presence of coordinated water molecules in the structure of the complexes which is confirmed by the presence of bands at 941.29 and 949.01 cm -1 , this corresponds to the position for vibrational bend mode for H2O. 15 The band at 1651.12 and 1658.84 cm -1 can be assigned to azomethine ligand while the bands at 717.53 and 671.25 cm -1 show metal-oxygen bond. 15 Based on the results of the physicochemical analysis, the proposed structure for the metal complexes indicates that the metal-ligand ratio is 1:2.…”

“…15 The band at 1651.12 and 1658.84 cm -1 can be assigned to azomethine ligand while the bands at 717.53 and 671.25 cm -1 show metal-oxygen bond. 15 Based on the results of the physicochemical analysis, the proposed structure for the metal complexes indicates that the metal-ligand ratio is 1:2.…”

“…The maximum absorption corresponds to 2 Eg→ 2 T2g transition which can be found in a tetragonally distorted octahedral complex. 15…”

Synthesis, Characterization and Biological Efficacies from Some New Dinuclear Metal Complexes for Base 3-(3,4-Dihydroxy-phenyl)-2-[(2-hydroxy-3-methylperoxy-benzylidene)-amino]-2-methyl Propionic Acid

“…The presence of water hydrate at the scope (3352-3550) cm -1 and coordinated in the spectra of all complexes were suggested by the very broad absorption bands around (3330-3400) cm -1 and show peaks at (708-816) cm -1 due to stretching, rocking and wagging modes of coordination water molecules [38]. Some new bands' weak intensity observed in the regions around (436-609) cm -1 may be ascribed to ν(M-N) and ν(M-O) vibration respectively [39]. According to the result data the geometry has been suggested at.…”

Synthesis, characterization of mixed- ligand complexes containing 2,2-Bipyridine and 3-aminopropyltriethoxysilane

“…While The second and third steps involved the thermal decomposition of the remaining parts of complexes [29,30] .On the other hand DTA curves record the changes that causing by temperature such as melting, sublimation, vaporization or changes that attributed weight losses are represented an endothermic character [31,31] .While the processes crystallization or change in the crystal structure and oxidation are represented exothermic character [33] .Generally many DTA curves for prepared complexes suggestion have a high thermal stability because the presence of 3-APTES as ligand in these complexes increase both the initial and final decomposition temperatures due to inherent high heat resistances of 3-APTES [34,35] . [36,37] . 3-APTES and 2,2-bipyridine was reacted with metal(II)(M=Co,Ni,Cu) to form mixed ligand complexes.…”