title: β-CD assisted dissolution of quaternary ammonium permanganates in aqueous medium.
abstract: The non-polar internal cavity of β-cyclodextrin (β-CD) has been exploited for the entrapment of the hydrophobic tails of two water insoluble quaternary ammonium permanganates (QAPs): cetyltrimethylammonium permanganate (CTAP) and tetrabutylammonium permanganate (TBAP), for solubilization in aqueous medium. The solubilization and organizational behavior of the QAPs in aqueous β-CD solution have been determined from the comparison of their rates of self-oxidation in presence and in absence of β-CD. Effect of QAP concentration on their observed rate constants (k(obs)) at a fixed β-CD concentration, phase solubility analysis in varying β-CD concentration, impact of quaternary ammonium bromides (QABs) on the kobs values of CTAP and TBAP at fixed QAP and β-CD concentrations, and the temperature effect have been reported. A scheme to explain the solvation of QAPs in aqueous β-CD has been proposed based on dynamic light scattering (DLS) analysis of the samples.
authors.affiliation: Department of Chemistry, Veer Surendra Sai University of Technology, Burla 768 018, Odisha, India.
authors.forename: Suraj Prakash
authors.initials: SP
authors.lastname: Bank
authors.affiliation: Department of Chemistry, Veer Surendra Sai University of Technology, Burla 768 018, Odisha, India.
authors.forename: Partha Sarathi
authors.initials: PS
authors.lastname: Guru
authors.affiliation: Department of Chemistry, Veer Surendra Sai University of Technology, Burla 768 018, Odisha, India. Electronic address: sukalyan_dash@yahoo.com.
authors.forename: Sukalyan
authors.initials: S
authors.lastname: Dash
mesh_terms: D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D017895:Manganese Compounds / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D012995:Solubility; D014867:Water / Q000737:chemistry*; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D002593:Cetrimonium Compounds; D017895:Manganese Compounds; D010087:Oxides; D000644:Quaternary Ammonium Compounds; D047392:beta-Cyclodextrins; D014867:Water; C048856:permanganic acid; C009405:tetrabutylammonium; C031215:betadex; D000077286:Cetrimonium
keywords: Cetyltrimethylammonium permanganate; Cyclodextrin; Dynamic light scattering; Inclusion complexation; Solubility analysis; Tetrabutylammonium permanganate