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

Pramana

S Sahoo¹  S K Sit2² 

[1] Department of Electronics & Instrumentation Engineering, Dr Meghnad Saha Institute of Technology, P.O. Debhog, Haldia, Purba Medinipur 721 657, India$$;Department of Physics, Dr Meghnad Saha Institute of Technology, P.O. Debhog, Haldia, Purba Medinipur 721 657, India$$

关键词: Dielectric behaviour;    dipole moment;    monomer;    dimer.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

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 𝜀0𝑖𝑗 and high-frequency permittivity 𝜀∞ 𝑖𝑗 at different weight fractions 𝑤𝑗s of polar solute at 35°C under static electric field using Debye model of polar liquid molecule. The static dipole moments 𝜇𝑠s are compared with 𝜇𝑗s reported from conductivity method and theoretical 𝜇theos to get exact 𝜇cal $cdot$ 𝜇theos 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.

【 授权许可】

Unknown