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Title: Detection of Tight ion-Pair in Some Novel Lipopathic Oxidants from the Monolayer at Air-Water Interface
Authors: Mishra, B K
Sahu, S
Pradhan, S
Patel, S
Keywords: Anchoring area;
Ion pairs;
Monolayer properties;
Solution chemistry;
Tight ion pairs;
Waterair interface
Issue Date: 2009
Publisher: Scientific
Citation: Indian Journal of Chemistry - Section A Inorganic, Physical, Theoretical and Analytical Chemistry, Volume 48, Issue 11, November 2009, Pages 1527-1531
Abstract: From the isotherms of surface pressure and area of cetyltrimethylammonium dichromate, permanganate and cerie nitrate, the anchoring area on water-air interface for each oxidant has been determined by spreading as Langmuir monolayer. The area/molecule of these oxidants with a common amphiphilic counterion, i.e., cetyltrimethylammonium ion, depends on the size of the anion counterpart indicating the existence of contact ion pair between CTA+ and the anionic group in aqueous medium. However, in aqueous acetic acid subphase, the decrease in area/molecule of cetyltrimethylammonium dichromate indicates dissociation of the constituting ions
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