Intermolecular interactions in binary mixtures of 2-Chloroethanol with 2-Dimethylaminoethanol and 2-Diethylaminoethanol at different temperatures

Densities, Ultrasonic Speeds, Viscosities, Refractive Indices, and Excess Properties of 1-Butyl-3-methylimidazolium Tetrafluoroborate + N-Methylacetamide Binary Mixtures at Different Temperatures

“…It is well known that, for an extensive H-bonding, a broad peak appeared at a lower frequency, while for less extensive H-bonding, a less intense and sharper peak appeared at a higher frequency . A sharp peak was observed for pure polar NMA at 3290.6 cm –1 (Figure ).…”

“…The spectra for pure liquid chemicals and their system at equimolar concentration are shown in It is well known that, for an extensive H-bonding, a broad peak appeared at a lower frequency, while for less extensive Hbonding, a less intense and sharper peak appeared at a higher frequency. 72 A sharp peak was observed for pure polar NMA at 3290.6 cm −1 (Figure 9). However, on addition of the IL, the FT-IR spectra of the system (x 1 = 0.5), the loop exhibiting the significant variation in frequencies, may be due to the breakdown of intermolecular H-bonding of NMA in the The existence of loop at 3415.9 cm −1 in the spectra showing hydrogen bonding in the mixture at a higher frequency may be due to formation of (new) hydrogen bonding between −NH of NMA and nitrogen atoms of the imidazolium ring of the ionic liquid.…”

“…Figure shows the two peaks in range of 2950–3200 cm –1 due to C–H stretching in the imidazolium ring of the IL at 2964.5 and 3161.3 cm –1 . These two spectra bands for the C–H stretching imply that the aromatic ring of the IL may occur in two different surroundings, for example, in ion pairs and dissociated ion pairs . On mixing of polar solvent NMA, these two bands (C–H stretching) shifts toward lower intensities (Figure ).…”

Influence of ionic liquid-like cationic pendants composition in cellulose based polyelectrolytes on membrane-based CO2 separation

“…These free hydroxyls are involved in the esterification reaction with 4-chlorobutyryl chloride for introducing alkyl chloride moieties that participate in the qu aternisation reaction with tertiary amines yielding the IL-like cationic pendants on CA. The spectra signals attributed to the tertiary amines used as precursors for cationic pendants may be consu lted elsewhere (Carter & Pemberton, 1997;Hirokawa, Kimu ra, Ohno, & Murata, 1980;Pandey, Awasthi, & Awasthi, 2013). This signal disappears upon tl1e functionalisation of CA with 1-methylimidazole and 1-methylpyrrolidine cationic pendants.…”

Acoustic, volumetric and spectroscopic investigations in binary mixtures of formamide/N-methylformamide+2-chloroethanol at various temperatures

“…Intermolecular interactions are a very complex subject, and thus, experimental results and theoretical models have to be combined to elucidate the fluid structure [2]. Recently, it has been found that the binary mixtures of polar and non-polar components have revealed interesting mixing behavior [3][4][5][6][7][8][9][10]. The present study reports the results of acoustic, volumetric and spectroscopic properties of binary liquid mixtures of formamide (FA) and N-methylformamide (NMF) with 2-chloroethanol .…”