Ionic motion and Disordered Structure in the Rotator Phase of Butylammonium Chloride Studied by Temperature Dependences
نویسندگان
چکیده
Temperature dependences of 35C1 and 2H quadrupole coupling constants and 35C1 NM R spin-lat tice relaxation times in polycrystalline samples were measured in the rotator phase of the butylam monium chlorides C4H 9N H 3C1 and C4H 9N D 3C1, obtainable above the phase transition tempera ture of 241 K. A rapid decrease of the quadrupole coupling constants of both nuclei upon heating is attributed to increasing dynamic disorder formed around the polar head. The presence of self-diffussion of C P ions was revealed from the spin-spin relaxation time and resonance line-width in single crystals, and confirmed by measuring the dc electrical conductivity.
منابع مشابه
A novel and efficient procedure for the preparation of benzyl alcohol by hydrolysis of benzyl chloride catalyzed by PEG1000-DAIL[BF4]/Fe2(SO4)3 under homogeneous catalysis in aqueous media
In this work, benzyl alcohol was obtained in 96% excellent yield by hydrolysis of benzyl chloride catalyzedby the recyclable temperature-dependant phase-separation system that comprised the ionic liquid PEG1000-DAIL[BF4], toluene and ferric sulfate under homogeneous catalysis in aqueous media. This novel methodnot only enhanced the yield, but also made the operating units easy workup. The catal...
متن کاملA Study on The Effect of Temperature on Human Prion Protein Structure through Molecular Dynamic Simulation
Background & Aims: The normal form of the prion protein is called PrPC and its infectious form is called PrPSc. This protein functions like a crystallized core for the transformation of PrPc into an abnormal PrPSc. The aim of the present study was to investigate the effect of temperature on human prion protein structure through molecular dynamic simulation. Methods: In this research, the GROMAC...
متن کاملMolecular Interaction of Benzalkonium Ibuprofenate and its Discrete Ingredients with Human Serum Albumin
Studying the interaction of pharmaceutical ionic liquids with human serum albumin (HSA) can help investigating whether or not ionic liquid formation can enhance pharmacological profile of the discrete ingredients. In this respect, in the present work, the interactions of Benzalkonium Ibuprofenate, as a well-known active pharmaceutical ionic liquid, Benzalkonium Chloride, and also Sodium Ibuprof...
متن کاملSynthesis of TiO2 nanoparticles in pure 2-hydroxyethylammonium formate room temperature ionic liquid and investigation of its photocatalytic properties
TiO2 nanoparticles were synthesized by modified sol—gel method using pure room temperature ionic liquid(RTIL) 2-hydroxyethylammonium formate as a reaction medium. The structure and morphology of TiO2nanoparticles were characterized with X-ray powder diffraction (XRD), BET surface analysis and scanningelectron microscopy (SEM). TiO2 nanoparticles were synthesized in open and closed vessels. The ...
متن کاملStrength and Range of Motion of Internal and External Rotator Muscles in Volleyball Players With and Without Uneven Shoulders
Objective: Performing repetitive overhead movements puts stress on the shoulder joint, leading to uneven shoulders and pain in the shoulder joint. The purpose of this study was to evaluate and compare the strength and Range of Motion (ROM) of internal and external rotator muscles in volleyball players with and without uneven shoulders. Methods: This is a descriptive and causal-comparative stud...
متن کامل