NDLI: Recognition of nitrates in a discrete dimeric capsular assembly of a triamide half-capsule

Content Provider	Semantic Scholar
Author	Arunachalam, Malathi Ghosh, Pradyut
Copyright Year	2011
Abstract	A newly synthesized tripodal amide receptor for the recognition of planar anions such as nitrate and acetate is described. The tripodal host, L, features a 1,3,5-substituted 2,4,6-trimethylbenzene scaffold bearing three convergent amide hydrogen bonding functionality and electron-withdrawing p-cyanobenzoyl terminals. The single-crystal X-ray crystallographic analysis on crystals obtained upon complexation of L with tetrabutylammonium nitrate in acetone shows the encapsulation of two NO3 ions inside the staggered dimeric capsular assembly of L . On the other hand, complexation with tetrabutylammonium acetate in the same solvent system shows non-capsular recognition of acetate and a water molecule inside the receptor bowl. The p-cyano substitution in the aryl terminals assists the formation of dimeric capsular assembly of L by enhancing the hydrogen bonding tendency of the aryl C-H protons. Though L demonstrates capsule formation upon complexation with NO3 , the geometrically similar AcO shows non-capsular recognition in the solid state, which may be due the structural difference between the two anions.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://nopr.niscair.res.in/bitstream/123456789/12781/1/IJCA%2050A(09-10)%201343-1349.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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