title: Recognition of steric factor in external association of xanthenocrown-5 and bis-napthalenocrown-6 with bis(benzimidazolium)propane borontetrafluoride.
abstract: This is the first report of charge transfer band for crown-axel H-bonding interaction in acetonitrile medium. Monte Carlo simulation established external association of small cavity crown with BBIM-propane dication axels. Resonance energy, binding constant and ratiometric detection of association of xanthenocrown-5 (1) and bis-napthalenocrown-6 (2) with bis-(benzimidazolium)propane borontetrafluoride (3a-3d) in acetonitrile determined the effect of steric factor towards association.
authors.affiliation: Department of Chemistry, Dr. Bhupendranath Dutta Smriti Mahavidyalaya, Burdwan 713407, India.
authors.forename: Animesh
authors.initials: A
authors.lastname: Karmakar
authors.affiliation: Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
authors.forename: Kshama
authors.initials: K
authors.lastname: Kundu
authors.affiliation: Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India.
authors.forename: Sabari
authors.initials: S
authors.lastname: Ghosh
authors.affiliation: Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India.
authors.forename: Chhanda
authors.initials: C
authors.lastname: Mukhopadhyay
authors.affiliation: Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
authors.forename: Sandip K
authors.initials: SK
authors.lastname: Nayak
authors.affiliation: Department of Chemistry, Dr. Bhupendranath Dutta Smriti Mahavidyalaya, Burdwan 713407, India. Electronic address: tanchem_bu@yahoo.co.in.
authors.forename: Tandrima
authors.initials: T
authors.lastname: Chaudhuri
keywords: Binding constant; Crown-axel isosbestic; H-bond; Iso-emissive; Monte Carlo simulation; Steric factor