Nickel(II) complexes of novel thiosemicarbazone compounds: Synthesis, characterization, molecular modeling and in vitro antimicrobial activity

Characterization and biological activity studies on some transition metal complexes of thiosemicarbazide derived from 2-picolinic acid hydrazide

“…In the spectra of all complexes, the bands assigned to the newly formed (N=C)* band due to the thiolating of the (C=S) groups are located in the range 1619-1630 cm -1 . The two bands assigned to δ(C=S) and ν(C=S) appear at the frequencies 1290 and 830 cm -1 respectively [31,32]. In all complexes, these two bands undergo weakness and shift to lower frequencies appearing in the range (1249-1260 cm -1 ) and (802-810 cm -1 ), respectively, confirming the coordination via the thiolate sulfur atom [33,34].…”

Synthesis of some transition metal complexes of novel 1-methylpyrazole-3-aldehyde-4-(2-pyridyl) thiosemicarbazone: Spectroscopic and in vitro biological activity studies

“…The ν(N-N) of the thiosemicarbazone ligand is found at 1068 cm -1 . The increase in frequency of this band in the spectra of complexes due to the increase in the double bond character of N-N [32] is an evidence for the enethiolization of the thiosemicarbazone ligand and the coordination via the azomethine nitrogen. The ν(N 1 H) and hydrazine ν(N 2 H) were observed at 3188 and 3168 cm -1 .…”

Solvent-driven structural topology involving energetically significant intra- and intermolecular chelate ring contacts and anticancer activities of Cu(ii) phenanthroline complexes involving benzoates: experimental and theoretical studies

“…The diameters of the inhibition zones were measured following the incubation period with slipping calipers recorded in millimeter. 36,37 2.6 Cell line and treatment plan…”