1 / 1

Unusual As–As and Sb–Sb Bonding in Thermoelectric Materials

Unusual As–As and Sb–Sb Bonding in Thermoelectric Materials. H. Kleinke, Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1. Many thermoelectric materials are based on tellurides or antimonides. The antimonides all exhibit unusual Sb–Sb interactions, e.g. linear chains in

evan-ayers
Download Presentation

Unusual As–As and Sb–Sb Bonding in Thermoelectric Materials

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Unusual As–As and Sb–Sb Bonding in Thermoelectric Materials H. Kleinke, Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1 Many thermoelectric materials are based on tellurides or antimonides. The antimonides all exhibit unusual Sb–Sb interactions, e.g. linear chains in b-Zn4Sb3, linear Sb37– ions in Yb14MnSb11 or planar Sb4 rectangles in the filled skutterudites. In Mo3Sb5Te2, the squares are interconnected to form empty cubes, where the edges correspond to weak so-called half ("hypervalent" one-electron) bonds. Our efforts during the past year afforded two new materials, Hf3Cu2Ge4–xSb1+x and Ba2Cu4–xTe5. The former contains an undistorted planar Ge/Sb atom layer with half bonds, and the latter uniquely distorted Te atom chains with various bonds. 2.69 Å 3.45 Å 3.12 Å 3.53 Å 3.02 Å Planar Ge/Sb layer in Hf3Cu2Ge4–xSb1+x 2.87 Å 3.67 Å Te chains in Ba2Cu4–xTe5

More Related