Cobalt(II) and strontium(II) complexes of three isomers, nicotinamide, isonicotinamide and picolinamide

Synthesis and Characterization of a New Compound of Cobalt II with Isonicotinamide and Evaluation of the Bactericidal Potential

“…Figure 4 shows the FTIR Open Journal of Inorganic Chemistry 3453, 3304 and 3181 cm −1 , the positions and relative intensities of the bands are altered due to the formation of hydrogen bonds between NH, water molecules and counter ion. These interactions can shift the bands to greater or lesser wave numbers [26]. Coordination compounds having amide groups or carbonyl donors show a decrease in the wave number of these groups, indicating that they are coordinated to metals [24] [25].…”

“…For the complex, a strong band attributed to the stretches of the group ʋ (C=O), whereas the angular deformation of the δ (N−H) showed a weak band and did not exhibit a relevant variation in wave number. This change is influenced by the hydrogen-bonding dimer of the amide groups [26].…”

Synthesis, Characterization, Spectral Properties and Electrochemical of Compounds <i>trans</i>-[Ru(NH)<sub>3</sub>L(bpa)]<sup>2+</sup>

“…The displacement observed in the symmetric stretch of the ν s (CCN) group of the complex compared to ν s (CCN) group in the free ligand is indicative of coordination of the pyridine group to the Ru 2+ metallic centre [22]. It was also noted that there is no significant displacements at asymmetric and symmetric stretching mode of the carbonyl group of free ligand (4-acpy and isn) compared to complex.…”

Synthesis and Magneto‐Structural Study of Distorted Octahedral CoII Complexes with Picolinamide and Azide (μ1,1)‐Bridge

“…Picolinamide has presented several pharmacological activities as a strong antibacterial and has been used in biological and medical processes [7] . The carboxamide [CONH] group in the proteins’ primary structure represents an important construction unit in coordination chemistry, giving a wide variety of structures [8–10] . For example, the pyridineformamide with transition metal coordination, mainly include O ‐monodentate, N, O bidentate ligands and N, O, N tridentate ligands [11–12] .…”

“…The focus on building complexes has continually risen since the discovery of supramolecular structures, up until present applications in the field of molecular magnetism [16] . The incorporation of metallic centres such as Co II into the bidentate ligand with physical properties are relevant for energy storage or conversion, bioactivity, and even materials to control self‐healing cellular cascades [8,17] …”