title: 1H NMR studies of molecular dynamics in polycrystalline catecholamines.
abstract: The proton dynamics in phenylephrine hydrochloride, isoprenaline hydrochloride and norephedrine hydrochloride have been monitored by measuring the temperature dependence of the 1H spin-lattice relaxation times. The results are interpreted as due to C3-hindered reorientation of the NH3 and CH3 groups. The activation parameters have been determined.
authors.affiliation: Institute of Molecular Physics PAS, Poznan, Poland.
authors.forename: T
authors.initials: T
authors.lastname: Grabias
authors.forename: N
authors.initials: N
authors.lastname: Piślewski
authors.forename: P
authors.initials: P
authors.lastname: Pośpieszyński
mesh_terms: D002395:Catecholamines / Q000737:chemistry*; D003460:Crystallization; D006859:Hydrogen / Q000737:chemistry; D007545:Isoproterenol / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D015394:Molecular Structure; D010656:Phenylephrine / Q000737:chemistry; D010665:Phenylpropanolamine / Q000737:chemistry; D013816:Thermodynamics
chemical_list: D002395:Catecholamines; D010656:Phenylephrine; D010665:Phenylpropanolamine; D006859:Hydrogen; D007545:Isoproterenol