Anion-π interactions in layered structures of salts of 5-(hydroxyimino) quinolin-8-one and related salts / created by Prithiviraj Khakhlary and J. Baruah

By:

Khakhlary, Prithiviraj [author]

Contributor(s):

Baruah, J [co author]

Material type: Text

TextSeries: Journal of chemical sciences ; Volume 127, number 1,Bangalore : Springer, 2015Content type:

text

Media type:

unmediated

Carrier type:

volume

ISSN:

09743626

Subject(s):

Layered structures -- Anion-π interactions -- Quinoline salts

LOC classification:

QD31 JOU

Online resources:

Click here to access online

Abstract: Relevance of anion-π interactions in chloride, bromide, nitrate and perchlorate salts of 5-(hydroxyimino)quinolin-8-one are discussed. Structures of nitrate salt of 5-aminoquinoline as well as nitrate salt of 4-hydroxyquinazoline are compared with the structure of nitrate salt of 5-(hydroxyimino)quinolin-8-one. From such a comparison, two different arrangements of nitrate ions with respect to the respective cations are discerned. Nitrate ions are sandwiched between aromatic planes of cations in nitrate salts of 5-(hydroxyimino)quinolin-8-one or 4-hydroxyquinazoline; whereas, nitrate ions are in oblique positions with respect to aromatic planes of counter cations in nitrate salt of 5-aminoquinoline. Binding constants of different nitrate salts in solution are determined by UV-visible spectroscopic titrations. Solution study shows formation of ion-pairs of these salts in solution.

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Item type	Current library	Call number	Vol info	Status	Notes	Date due	Barcode
Journal Article	Main Library - Special Collections	QD31 JOU (Browse shelf(Opens below))	Vol. 127, no.1 (pages 95-102)	Not for loan	For in house use only

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Relevance of anion-π interactions in chloride, bromide, nitrate and perchlorate salts of 5-(hydroxyimino)quinolin-8-one are discussed. Structures of nitrate salt of 5-aminoquinoline as well as nitrate salt of 4-hydroxyquinazoline are compared with the structure of nitrate salt of 5-(hydroxyimino)quinolin-8-one. From such a comparison, two different arrangements of nitrate ions with respect to the respective cations are discerned. Nitrate ions are sandwiched between aromatic planes of cations in nitrate salts of 5-(hydroxyimino)quinolin-8-one or 4-hydroxyquinazoline; whereas, nitrate ions are in oblique positions with respect to aromatic planes of counter cations in nitrate salt of 5-aminoquinoline. Binding constants of different nitrate salts in solution are determined by UV-visible spectroscopic titrations. Solution study shows formation of ion-pairs of these salts in solution.

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