Niobium germanium telluride: A new member of the niobium(x)-M-tellurium(2x) family

Add time:07/30/2019    Source:sciencedirect.com

During the course of investigating novel low dimensional ternary chalcogenide compounds, we have synthesized Nb3GeTe6, a new member of the layered telluride phases that belongs to the NbxMTe2x family. The crystal structure of Nb3GeTe6 has been determined by single-crystal X-ray analysis. It crystallizes in the orthorhombic space group Pnma (#62) with lattice parameters a=6.435(2)Å, b=13.915(4)Å, c=11.524(2)Å, V=1032.0(8)Å3 and Z=4. The final residual index is converged to R=4.7%, Rw =5.9%. The structure consists of layers of mixed NbGe sheets capped with tellurium atoms from both sides. Both germanium and niobium exhibit an unusual coordination environment in the layered framework.

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