Theoretical and experimental study of infrared spectral data of 2-bromo-4-chlorobenzaldehyde

Ultrasonic controllable synthesis of sulfur-functionalized metal–organic frameworks (S-MOFs) and their application in piezo-photocatalytic rapid reduction of hexavalent chromium (Cr)

“…The spectra reveal the different molecular structures and compositions of the samples. H 2 TDC has a simple structure, with two C = O bonds of the –COOH group in the same chemical environment, which appear in the spectrum near 1600 cm −1 [36] . The two peaks near 1500 cm-1 correspond to the vs and vas modes of vibration of COOH, respectively [36] , [37] .…”

“…H 2 TDC has a simple structure, with two C = O bonds of the –COOH group in the same chemical environment, which appear in the spectrum near 1600 cm −1 [36] . The two peaks near 1500 cm-1 correspond to the vs and vas modes of vibration of COOH, respectively [36] , [37] . The broad peak near 1250 cm-1 indicates the characteristic of the thiophene ring [38] , [39] .…”

Mechanically Flexible Crystals of Benzene Derivatives with Halogen or Methyl Groups

“…Intermolecular interactions can be examined from IR spectra of benzene derivatives with bromo and methyl groups. Focusing on the range of 500–750 cm –1 derived from the C–Br vibration, there are two vibration bands with a boundary at 600 cm –1 (Figure S4). The vibration band above 600 cm –1 was observed in the IR spectra of Br1 , Br2, and Br3 (720, 689, and 646 cm –1 , respectively), while the vibration band below 600 cm –1 was observed in that of Br4 and Br6 (553 and 557 cm –1 , respectively).…”

“…Intermolecular interactions can be examined from IR spectra of benzene derivatives with bromo and methyl groups. Focusing on the range of 500−750 cm −1 derived from the C−Br vibration, 52 there are two vibration bands with a boundary at 600 cm −1 (Figure S4). The vibration band above 600 cm −1 was observed in the IR spectra of Br1, In the case of Br5, both vibration bands were observed at 550 and 662 cm −1 , indicating that bromine in Br5 is in a different environment from bromine of other molecules.…”

Polyolefin-Based Smart Self-Healing Composite Coatings Modified with Calcium Carbonate and Sodium Alginate

“…Furthermore, the O-H functional group was observed between 3200 and 3400 cm −1 due to the presence of sodium alginate in the anti-corrosive pigment (CaCO 3 /Alg) [25]. Symmetric and asymmetric vibrations were observed at 1406 and 1648 cm −1 due to the presence of carboxylate salt ions [26]. XRD analysis of the CaCO3 before and after the heat treatment was carried out to evaluate the changes in the structure.…”