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Tetraethylgermanium

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Tetraethylgermanium (IUPAC name: tetraethylgermane), abbreviated TEG, is an organogermanium compound with the formula (CH3CH2)4Ge. Tetraethylgermanium is an important chemical compound used in vapour deposition of germanium which is in a tetrahedral shape.

Tetraethylgermanium
Structural formula of tetraethylgermanium
Ball-and-stick model of the tetraethylgermanium molecule
Names
Preferred IUPAC name
Tetraethylgermane
Identifiers
3D model (JSmol)
Abbreviations TEG
ChemSpider
ECHA InfoCard 100.009.006 Edit this at Wikidata
EC Number
  • 209-905-7
RTECS number
  • LY5290000
UN number 1993
  • InChI=1S/C8H20Ge/c1-5-9(6-2,7-3)8-4/h5-8H2,1-4H3 checkY
    Key: QQXSEZVCKAEYQJ-UHFFFAOYSA-N checkY
  • InChI=1/C8H20Ge/c1-5-9(6-2,7-3)8-4/h5-8H2,1-4H3
    Key: QQXSEZVCKAEYQJ-UHFFFAOYAH
  • CC[Ge](CC)(CC)CC
Properties
C8H20Ge
Molar mass 188.878 g·mol−1
Appearance Colourless liquid
Density 0.998 g cm−3
Boiling point 163 to 165 °C (325 to 329 °F; 436 to 438 K)
Hazards
GHS labelling:
GHS02: FlammableGHS07: Exclamation mark
Warning
H226, H302, H315, H319, H335
P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P301+P312, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazards (white): no code
2
3
2
Flash point 35 °C (95 °F; 308 K)
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis

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Clemens Winkler first reported the compound in 1887 from diethylzinc and germanium tetrachloride, shortly after germanium was discovered in 1887.[1]

References

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  1. ^ Clemens Winkler (1887). "Mittheilungen über des Germanium. Zweite Abhandlung". J. Prak. Chemie. 36: 177–209. doi:10.1002/prac.18870360119. Retrieved 2008-08-20.
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