World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0031629987
Reproduction Date:

Title: Tellurol  
Author: World Heritage Encyclopedia
Language: English
Subject: Functional groups, Selenonic acid, Polonium hydride, Phosphonite, Acetoxy group
Publisher: World Heritage Encyclopedia



Alkyltellurols are yellow liquids with a strong odors. Aryltellurols form colorless crystals. More stable than these compounds are the organoelement tellurols. These fairly stable compounds have the formulae (Me3Si)3CTeH, (Me3Si)3SiTeH, and (Me3Si)3GeTeH.

Acid–base properties

The acidity of tellurols can be inferred by the acidity and dissociation constant of hydrogen telluride, H2Te, which has a (first) pKa of 2.64 corresponding to a dissociation constant of 2.3 × 10-3.5. H2Te has a lower pKa and higher dissociation constant than H2S and H2Se.[3]

The absence of hydrogen-bonding explains the low boiling temperature of tellurols.[3] The Te–H bond in tellurols is weak. Tellurols are easily oxidized and decompose thermally. Ultraviolet light also induces decomposition. Methanetellurol decomposes to dimethyl ditelluride and hydrogen.


The first tellurol to be synthesized, ethanetellurol, was prepared in 1926 via the Grignard reagent.[1] The most frequently used method involves reduction of the ditellurides (R2Te2).

See also


  1. ^ a b Igor D Sadekov and A V Zakharov 1999 "Stable tellurols and their metal derivatives" Russ. Chem. Rev. 1999, vol. 68, 909.
  2. ^ Brahim Khater, Jean-Claude Guillemin, Gábor Bajor, Tamás Veszprémi "Functionalized Tellurols: Synthesis, Spectroscopic Characterization by Photoelectron Spectroscopy, and Quantum Chemical Study" Inorganic Chemistry 2008 volume 47, p. 1502-1511. doi:10.1021/ic701791h
  3. ^ a b Patai, Saul, and Zvi Rappoport. The Chemistry of Organic Selenium and Tellurium Compounds. Vol. 1. Chichester England: Wiley, 1986.
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.