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Title: Structural and associational aspects of dielectropolar straight chain alcohols from relaxation phenomena
Authors: Ghosh, N
Karmakar, A
Sit, S K
Acharyya, S
Issue Date: Aug-2000
Publisher: NISCAIR-CSIR, India
Abstract: The structural and associational aspects of some straight chain aliphatic alcohols are inferred from their static dipole moments μs’s and high frequency (hf) dipole momnts μj’s in terms of relaxation times τj's under effective dispersive region of nearly 24 GHz electric field. τj's are estimated from the slope of the linear variation of imaginary part σ″ij with real part σ″ij of hf complex conductivity σ*ij for different weight fractions wj in order to compare with those obtained from the ratio of the individual slopes of σ″ij and σ″ij with wj’s of solutes. The linear coefficients of the static experimental parameter Xij with wj are used to obtain μs. The slopes β’s of σij with wj’s are employed to get hf μj in terms of τj's obtained by two methods only to see how far they agree with μ1 and μ2 from double relaxation method (Sit & Acharyya, 1996 and Sit et al .. 1997). It is observed that –OH bond of alcohols about  C-O- bond rotates under GHz electric field. The slight disagreement of theoretical dipole moments μtheo's from available bond angles and bond moments with μj’s and μs’s suggest the strong hydrogen bonding in them, in addition to mesomeric and inductive moments of the substituent polar groups attached to the parent molecule.
Page(s): 574-588
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.38(08) [August 2000]

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