title: A spectrophotometric study of the charge transfer complexes of [60]fullerene with different tert-butylcalix[4]crowns.
abstract: Formation of the charge-transfer complexes between various calix[4]crowns (1-4) and [60]fullerene were studied in toluene solution using UV-vis spectrophotometry. The stability constants and the thermodynamic data of the resulting 1:1 complexes were determined and were found to decrease with increasing the size of the crown moiety of the calixcrown. Except the complex of 3, all the complexes were found to be enthalpy stabilized but disfavored in terms of entropy.
authors.affiliation: Chemistry Department, Yarmouk University, Irbid, Jordan. z79sam@hotmail.com
authors.forename: Shehadeh A
authors.initials: SA
authors.lastname: Mizyed
authors.forename: Elita
authors.initials: E
authors.lastname: Al-Jarrah
authors.forename: Deeb
authors.initials: D
authors.lastname: Marji
authors.forename: Muhammad
authors.initials: M
authors.lastname: Ashram
mesh_terms: D047248:Crown Compounds / Q000737:chemistry*; D004583:Electrons; D037741:Fullerenes / Q000737:chemistry*; D007700:Kinetics; D012996:Solutions; D013053:Spectrophotometry; D013816:Thermodynamics; D014050:Toluene / Q000737:chemistry
chemical_list: D047248:Crown Compounds; D037741:Fullerenes; D012996:Solutions; D014050:Toluene