NMR characterization of substituent effects in cation–pi interactions

dc.contributor.author	Sayyed, F B
dc.contributor.author	Suresh, C H
dc.date.accessioned	2013-06-27T04:53:43Z
dc.date.available	2013-06-27T04:53:43Z
dc.date.issued	2012-01-27
dc.identifier.citation	Chemical Physics Letters 523:11-14;27 Jan 2012	en_US
dc.identifier.uri	http://hdl.handle.net/123456789/509
dc.description.abstract	Substituent effects in C6H5X. . .M+ (M+ = Li+, Na+, K+, and NHþ4) systems have been characterized using isotropic nuclear magnetic shielding constants (r). Good linear relationship between r and the Hammett substituent constant rp is established which suggests that the substituent effects can be quantified by NMR experiments. Irrespective of the electronic nature of X, meta carbons, and all the hydrogens are always deshielded and this property is useful for detecting cation–p interaction. The r-scan plots revealed that the deshielding effect of the cation on the aromatic ring is significant even at large cation–p distance ( 4.5 Å)	en_US
dc.language.iso	en	en_US
dc.publisher	Elsevier	en_US
dc.subject	NMR spectroscopy	en_US
dc.subject	Meta carbons	en_US
dc.subject	Cation–pi complexes	en_US
dc.title	NMR characterization of substituent effects in cation–pi interactions	en_US
dc.type	Article	en_US
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