Synthesis of the Tetragonal Phase of Zintl's NaTl and Its Structure Determination from Powder Diffraction Data
Abstract
A tetragonal distortion of the long-time known NaTl structure at 298 K was observed in different experimental setups, including Zintl's original procedure of reducing Tl(I)-iodide by sodium liquid ammonia solutions. The powder diffraction pattern obtained by the high temperature synthesis using classical solid-state techniques allowed a model-independent unambiguous structure solution and refinement of tetragonal distorted NaTl (Rp = 0.0179, wRp = 0.0246, R = 0.0477, wR = 0.0527, GooF = 1.24).
- Publication:
-
Materials
- Pub Date:
- April 2019
- DOI:
- 10.3390/ma12081356
- Bibcode:
- 2019Mate...12.1356T
- Keywords:
-
- Zintl phase;
- NaTl;
- ammonia;
- X-ray powder diffraction