Hydrogen-1 nuclear magnetic resonance, differential thermal analysis, X-ray powder diffraction and electrical conductivity studies on the motion of cations, including self-diffusion in crystals of propylammonium chloride and bromide as well as their n-deuterated analogues

摘要: 1 H N.m.r. measurements and differential thermal analyses have been performed on solid propylammonium chloride bromide, including their N-deuterated analogues. X-Ray powder diffraction electrical conductivity were measured for the highest-temperature phase of NH3(n-C3H7)Cl. The corresponding bromide was determined. These salts three phases below respective melting temperature. In phase, having a structure consisting cation anion layers, it found that cations perform self-diffusion in two-dimensional layers. A non-linear log T1vs. T–1 curve observed room-temperature could be well explained by assuming non-Arrhenius type process random reorientation along cationic chain axis. broad T1 minimum NH3(n-C3H7)Br its low-temperature has assigned to two closely spaced minima due C3 CH3 NH+3 groups. Motional parameters above motions present evaluated, features these are discussed.