| Initial crystal system | unknown |
| Final crystal system | cubic |
| Initial space group | unknown |
| Final space group | cubic |
| Direction | both |
| Phase transition temperature | 178.0 (±5.0) K |
Hysteresis: NIL
Starting materials: HCl, CD3NH2, PbCl2
Product: CD3NH3PbCl3 crystals
Description: Primarily referenced the methods of [1] and [2]. The synthesis of MAPbBr3 in ref [2] was modified to prepare CD3NH3PbCl3.
Comment: Synthesis references: [1] Canadian Journal of Chemistry, 1987, 65(5): 1042-1046 https://doi.org/10.1139/v87-176 [2] D. WEBER. Z. Naturforsch. 33b, 1443 (1978).
Method: 2H and 14N NMR
Description: Measurements were carried out at 8.48 T with a Nicolet 360NB spectrometer using a broad band (16-58 MHz) variable-temperature 10 mm probe supplied by Nicolet. The 2-H and 14-N frequencies were 55.427 and 26.083 MHz, respectively. Refer to Page 414 Results section Existence of transitions subsection.