THE CRYSTAL STRUCTURE OF ROOM-TEMPERATURE SYNTHESIZED ORTHORHOMBIC TLCU4SE3 FROM DIRECT-METHODS ON X-RAY-POWDER DATA

• An orthorhombic modification of TlCu4Se3 was synthesised at room temperature by oxidative copper extraction from TlCu5Se3. It crystallises in a new structure type, space group Pnnm, with the cell parameters a = 12.4306(2) Angstrom, b = 12.7997(2) Angstrom, c= 3.93516(6) Angstrom. The structure is closely related to the tetragonal structure of the parent compound.

Keyword

X-RAY POWDER DATA; METALLIC CONDUCTORS; TRANSFORMATION MECHANISMS; STRUCTURE REFINEMENT; METAL; SYSTEM; KCU4S3

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