Dependence of $^{35}Cl$ NQR on hydrogen bonding and temperature in dichlorophenol–aniline charge transfer complexes

Ramananda, D and Ramesh, KP and Uchil, J (2007) Dependence of $^{35}Cl$ NQR on hydrogen bonding and temperature in dichlorophenol–aniline charge transfer complexes. In: Magnetic Resonance in Chemistry, 45 (10). pp. 860-864.

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Abstract

The hydrogen-bonded charge transfer complexes of aniline with \pi-acceptors (or proton donors) such as 2,5-, 2,6-, 3,4- and 3,5-dichlorophenol were prepared. The $^{35}Cl$ nuclear quadrupole resonance (NQR) frequencies of these charge transfer complexes in the temperature range 77–300 K were measured to ascertain the existence or otherwise of a phase transition upon complex formation. Further, the NQR frequency and asymmetry parameter of the electric field gradient at the site of quadrupole nucleus were used to estimate the chemical bond parameters, namely ionic bond, double bond character of the carbon–chlorine (C–Cl) bond and the percentage charge transfer between the donor–acceptor components in charge transfer complexes. The effect of hydrogen bonding and temperature on the charge transfer process is analysed.

Item Type:	Journal Article
Publication:	Magnetic Resonance in Chemistry
Publisher:	John Wiley & Sons, Ltd.
Additional Information:	Copyright of this article belongs to John Wiley & Sons, Ltd.
Keywords:	hydrogen bonded;NQR;charge transfer;chemical bond;ionic bond;double bond.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	29 Jul 2008
Last Modified:	19 Sep 2010 04:48
URI:	http://eprints.iisc.ac.in/id/eprint/15323

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