Spectroscopic investigations of new binuclear transition metal complexes of Schiff bases derived from 4,6-diacetylresorcinol and 3-amino-1-propanol or 1,3-diamino-propane

Synthesis, spectroscopic properties, molecular docking, anti-colon cancer and anti-microbial studies of some novel metal complexes for 2-amino-4-phenylthiazole derivative

“…The shift of the stretching frequencies of azomethine m(-C@N-) group of the metal complexes to lower frequencies which lie in the range of 1620-1576 cm À1 , compared with the free ligand band at 1629 cm À1 , may be due to coordination of two azomethine groups to metal ions [22,48].…”

“…The assignments were aided by comparison with the vibrational frequencies of the free ligand and its related compounds [22,48,49]. Fig.…”

Rigid palm oil-based polyurethane foam reinforced with diamine-modified montmorillonite nanoclay

“…Further supporting is presence of bands at 3043 and 2948 cm -1 , attributed to the absorption band of DAP symmetric and asymmetric C-H, respectively. Other bands include 1561 cm -1 (NH 2 stretching), 1457 cm -1 (CH 3 and CH 2 asymmetrical stretching), and 1325 cm -1 (CH 3 and CH 2 symmetrical stretching) [15]. As for pristine and nanocomposite foam spectra, presence of peaks at 1712 cm -1 , 1509 cm -1 , and 1216 cm -1 confirms the formation of PU network as these bands represent the bending vibration C=O, N-H, and C-N, respectively.…”

Model based multi-wavelength spectrophotometric method for calculation of formation constants of phenanthrenequinone thiosemicarbazone complexes with some metallic cations

“…In spite of the spectrophotometric method is rapid, cheap and simple, the direct spectrometric measurements show lack of specificity because the spectra are strongly overlapped. In such cases the chemometric techniques become an indispensable tool to overcome these problems [15][16][17][18][19] .…”