1.
Chem Commun (Camb)
; 51(20): 4180-4183, 2015 Mar 11.
Artigo
em Inglês
| MEDLINE
| ID: mdl-25634426
RESUMO
The methylammonium cation in [CH3NH3]PbI3 demonstrates increasing positional disorder on heating from 100 K to 352 K. In the tetragonal phase, stable between 165 K and 327 K, the cation is disordered over four sites directed toward the faces of the distorted cubic [PbI3](-) framework and migrates towards the cavity centre with increasing temperature.