Investigation of structural phase transition behavior by thermal analysis, high temperature X-ray single crystal and vibrational study of Rb2HAsO4⋠Te(OH)6 compound

The increase in temperature affected the structural arrangement in which the coordinated polyhedra are distorted and the “a” lattice cell dimension increases with a slight variation of the other parameters. The planes of octahedra and tetrahedra were parallel to the c direction like those in the structure at room temperature but the planes formed by the cations atoms changed their direction.