title: Infrared spectra of proton transfer complexes of the cycleanine alkaloid in solid state.
abstract: Proton transfer complexes obtained between the cycleanine alkaloid and hydrogen chloride, hydrogen bromide and nitric acids have been investigated by infrared spectroscopic technique between 4000 and 400 cm(-1) in KBr. The vibrational perturbations brought about by proton transfer complex formation, discussed in terms of preferred site of interaction, show that the proton of the inorganic acids is transferred to cycleanine through one of its N sites.
authors.affiliation: Faculte des Sciences, Universite de Kinshasa, BP 190 Kinshasa XI, RD. Congo. okumakasende@yahoo.com
authors.forename: Okuma E
authors.initials: OE
authors.lastname: Kasende
authors.forename: D
authors.initials: D
authors.lastname: de Waal
mesh_terms: D000470:Alkaloids / Q000737:chemistry*; D001665:Binding Sites; D001965:Bromides / Q000737:chemistry; D018054:Hydrobromic Acid / Q000737:chemistry; D006851:Hydrochloric Acid / Q000737:chemistry; D006860:Hydrogen Bonding; D008956:Models, Chemical; D017942:Nitric Acid / Q000737:chemistry; D009584:Nitrogen / Q000737:chemistry; D017680:Potassium Compounds / Q000737:chemistry; D011522:Protons; D013055:Spectrophotometry, Infrared / Q000379:methods*
chemical_list: D000470:Alkaloids; D001965:Bromides; D017680:Potassium Compounds; D011522:Protons; D018054:Hydrobromic Acid; D017942:Nitric Acid; D009584:Nitrogen; C039004:potassium bromide; D006851:Hydrochloric Acid