Pentamethyltantalum

Pentamethyltantalum
Names
Systematic IUPAC name
pentamethyl-λ5-tantalane
Identifiers
3D model (JSmol)
  • InChI=1S/5CH3.Ta/h5*1H3;/q5*-1;+5 ☒N
    Key: GFPNFSSWCUULLCP-UHFFFAOYSA-N ☒N
  • C[Ta](C)(C)(C)C
Properties
C5H15Ta
Molar mass 256.123 g·mol−1
Appearance yellow oil, green solid at −20°
Melting point 0 °C (32 °F; 273 K)[1]
Solubility diethylether, pentane, 2-methylbutane
Thermochemistry
169.8[2] 213 kJ/mol[3]
Related compounds
Related compounds
 Pentamethylarsenic
Pentamethylbismuth
Pentamethylantimony
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Pentamethyltantalum is a homoleptic organotantalum compound. It has a propensity to explode when it is melted.[4] Its discovery was part of a sequence that led to Richard R. Schrock's Nobel Prize winning discovery in olefin metathesis.[5]

  1. ^ Yaws, Carl L. (2015). The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals: Physical Properties for More Than 54,000 Organic and Inorganic Chemical Compounds, Coverage for C1 to C100 Organics and Ac to Zr Inorganics. Gulf Professional Publishing. p. 87. ISBN 9780128011461.
  2. ^ Adedeji, Festus A.; Connor, Joseph A.; Skinner, Henry A.; Galyer, Lee; Wilkinson, Geoffrey (1976). "Heat of formation of pentamethylantalum and hexamethyltungsten". Journal of the Chemical Society, Chemical Communications (5): 159. doi:10.1039/C39760000159.
  3. ^ "Pentamethyl tantalum". webbook.nist.gov.
  4. ^ Urben, Peter (2013). Bretherick's Handbook of Reactive Chemical Hazards. Academic Press. p. 744. ISBN 9780080523408.
  5. ^ Cite error: The named reference nl was invoked but never defined (see the help page).