Accession Number : AD0753822

Title :   High Temperature Phase Transitions in (CH3)4NCl.

Descriptive Note : Technical rept.,

Corporate Author : ILLINOIS UNIV URBANA NOYES CHEMICAL LAB

Personal Author(s) : Albert,Shmuel ; Ripmeester,John A.

Report Date : 29 NOV 1972

Pagination or Media Count : 15

Abstract : The high temperature structural modifications of tetramethylammonium chloride (CH3)4NCl which exist between 298K and 607K were investigated by static and rotating frame proton spin-lattice relaxation times, T1 and T(1 rho), respectively. Polycrystalline samples treated in different manners were studied in order to understand the mechanism of the phase transition near 418K. Two possible processes are consistent with the observations.

Descriptors :   (*AMMONIUM COMPOUNDS, *PHASE STUDIES), SALTS, CHLORIDES, CRYSTAL STRUCTURE, TRANSITION TEMPERATURE

Subject Categories : Physical Chemistry
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE