Dielectric studies of H-bonded complexes of formamide and acetamide with substituted phenols

Malathi, M.; Sabesan, R.; Krishnan, S.

doi:10.1016/j.molliq.2003.08.020

Cited by 25 publications

(16 citation statements)

References 17 publications

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“…This result is closely in agreement with Ramaswamy et al [22] and Malathi et al [23] for the systems of p-cresol with different C¼O group in carbon tetrachloride. But this trend does not exist in 1-dodeconal with alkyl methacrylates (MMA, EMA and BMA), which reveals that the acidity of phenol is in higher order than in 1-dodeconal.…”

Section: Physics and Chemistry Of Liquids 505supporting

confidence: 92%

Infrared studies on hydrogen bonding interaction between acrylic esters with 1-dodeconal and phenol in carbon tetrachloride

Khan

Sivagurunathan

2008

Physics and Chemistry of Liquids

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The influence of the hydroxyl group in 1-dodeconal and phenol on the carbonyl vibration of representative compounds belonging to methyl methacrylate, ethyl methacrylate and butyl methacrylate in carbon tetrachloride has been studied by Fourier transform infrared spectroscopic method. The integrated intensities and change in dipole moments for O-H and C¼O bonds were calculated. The formation constants of the 1 : 1 complexes have been calculated using Nash's method. The values of the formation constant and Gibbs energy vary with the ester chain length, which suggests that the strengths of the intermolecular hydrogen bonds (O-H Á Á Á O¼C) are dependent on the alkyl group of the acrylic ester and the results show that the proton accepting ability of acrylic esters is in the order methyl methacrylate 5 ethyl methacrylate 5 butyl methacrylate. The strength of the intermolecular C¼O: HO bonds is also shown to be dependent on the basicity of the C¼O group of acrylic esters and the acidity of the proton donor.

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Section: Physics and Chemistry Of Liquids 505supporting

confidence: 92%

Infrared studies on hydrogen bonding interaction between acrylic esters with 1-dodeconal and phenol in carbon tetrachloride

Khan

Sivagurunathan

2008

Physics and Chemistry of Liquids

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“…It is evident that the frequency of the electric field is the reason for the slight discrepancies of μ theo s, μ s s and μ j s. The associational behaviours of the polar molecules are given in figure 2. The primary and secondary amides show the self-association or solute-solute (dimer) molecular association through the hydrogen bond in 1,4-dioxan or C 6 H 6 [3,12]. One such typical solute-solute (dimer) association for NMA in C 6 H 6 is given in figure 2(iii(b)).…”

Section: Resultsmentioning

confidence: 99%

Dielectric behaviour of some amides and formamides dissolved in nonpolar solvents under static electric field

Sahoo

Sit

2011

Pramana - J Phys

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Structural and associational aspects of polar amides ( j) like formamide, acetamide, Nmethyl acetamide (NMA), N,N-dimethyl formamide (DMF), N,N-dimethyl acetamide (DMA) and acetanilide dissolved in the nonpolar solvent (i) benzene or 1,4-dioxan have been estimated from the measured static relative permittivity ε 0ij and high-frequency permittivity ε ∞ij at different weight fractions w j s of polar solute at 35 • C under static electric field using Debye model of polar liquid molecule. The static dipole moments μ s s are compared with μ j s reported from conductivity method and theoretical μ theo s to get exact μ cal . μ theo s of the molecules are predicted from the available bond angles and bond moments where difference in electron affinity exists between two adjacent atoms of a polar group due to inductive, mesomeric and electromeric effects in them. Solute-solute molecular association for NMA in benzene and solute-solvent association for other amides are ascertained to arrive at their conformational structures.

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“…This is concluded that interaction arising due to the polarization and not to the other phenomena. [21][22][23][24] The dipolar increment, enthalpy changes , dipole moment of cis and trans are reported in Table-2. The results are may be an interpretation of higher order complexes must prevail.…”

Section: Resultsmentioning

confidence: 99%

Dielectric Measurements of the Ternary Mixtures of Alcohols With Aniline in Carbon Tetrachloride at 301k

2017

RJC

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The nature of hydroxylamine complexes was identified through the formation of hydrogen bonding between alcohols (methanol, ethanol, propanol, and butanol) with aniline from the dielectric measurements like dielectric constant, density and refractive index. From these measurements, the dipole moment of hydroxylamine complex was determined from the Huysken's method origin of Onsager model also evaluated the dipolar increment. The enthalpy changes due to bond formation obtained from the dipolar increment. The dipole moment of the both cis and trans structure are determined and tabulated, the dipole moment values of the trans are higher than the cis structure it may complex is form the trans structure. The value of dipole moment of the complex, dipolar increment and enthalpy changes concluded complex formation mainly due to the polarization only. These values indicate the order of the complex methanol > ethanol > propanol > butanol, aniline as one of the component.

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Dielectric studies of H-bonded complexes of formamide and acetamide with substituted phenols

Cited by 25 publications

References 17 publications

Infrared studies on hydrogen bonding interaction between acrylic esters with 1-dodeconal and phenol in carbon tetrachloride

Infrared studies on hydrogen bonding interaction between acrylic esters with 1-dodeconal and phenol in carbon tetrachloride

Dielectric behaviour of some amides and formamides dissolved in nonpolar solvents under static electric field

Dielectric Measurements of the Ternary Mixtures of Alcohols With Aniline in Carbon Tetrachloride at 301k

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