Effect of placement of hydroxyl groups in isomeric butanediol on the behaviour of thermophysical and spectroscopic properties of pyrrolidin-2-one

A comparative study of thermophysical and spectroscopic properties in mixtures of isomeric butanediol and N,N-dimethylformamide

“…Viscosity measurements were made using modified form of Ubbelohde viscometer placed in a water thermostat, the temperature of which was controlled to ±0.01 K. The flow time of definite volume of liquid through the capillary was measured with an accurate stopwatch with a resolution of 1 AE 10 À2 s. Viscosity values are uncertain to within the range 0.001 mPa AE s. 1 H and 13 C NMR chemical shifts were observed with the help of a JEOL AL 300 MHz FT NMR spectrometer operating at 300 MHz. In order to determine the chemical shift d for liquid mixtures of DMF and BTD at entire composition range, CDCl 3 was used as an external solvent for all the NMR measurements.…”

“…Recently, extensive database on the thermodynamic and spectroscopic interactions in mixtures of isomeric butanediol with pyrrolidin-2-one was presented [1]. In the present work, we have analyzed the mutual intermolecular interactions in the liquid mixtures of isomeric butanediol (BTD) and N,N-dimethylformamide (DMF).…”

“…The detailed analysis is presented for liquid mixtures of BTD and DMF at 308.15 K in terms of volumetric (V E , u), transport (g), and spectroscopic (IR, 1 H and 13 results. Several related parameters were estimated and discussed in comparison with (BTD + pyrrolidin-2-one (PY)) mixtures reported earlier [1].…”

“…Several related parameters were estimated and discussed in comparison with (BTD + pyrrolidin-2-one (PY)) mixtures reported earlier [1].…”

Structural and interactional studies of homologous series of α,ω-alkanediols in N,N-dimethylformamide

“…IR and NMR, selection of suitable associations and contributions to non-ideal behaviour of a mixture can be evaluated [19,[25][26][27][28][29]. The IR measurements for mixtures of (DMF + a,x-alkanediols) over the entire composition range have been carried out.…”