Triethyl germanium hydride

Structural formula
General
Surname	Triethyl germanium hydride
other names	Triethylgerman
Molecular formula	(C 2 H 5 ) 3 GeH
Brief description	colorless liquid
External identifiers / databases
CAS number 1188-14-3 EC number 629-140-6 ECHA InfoCard 100.157.348 PubChem 6327150 Wikidata Q22668744
properties
Molar mass	160.83 g mol −1
Physical state	liquid
density	0.994 g cm −3 (25 ° C)
boiling point	121-122 ° C (at 20 mmHg)
Refractive index	1.433 (20 ° C)
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 225-302-312-332 P: 210-280
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Triethylgermanium hydride is a chemical compound from the group of organic germanium compounds .

Extraction and presentation

Triethyl germanium hydride can be obtained by reacting triethyl germanium chloride with lithium aluminum hydride in diethyl ether or dibutyl ether .

${\displaystyle \mathrm {4\ ClGe(CH_{2}CH_{3})_{3}+\ LiAlH_{4}{\xrightarrow[{}]{Et_{2}O}}\ 4\ HGe(CH_{2}CH_{3})_{3}\ +\ LiCl\ +\ AlCl_{3}} }$

The reduction with lithium hydride in di- iso -pentylether is also possible, but gives a lower yield.

${\displaystyle \mathrm {ClGe(CH_{2}CH_{3})_{3}+\ LiH{\xrightarrow[{}]{}}\ HGe(CH_{2}CH_{3})_{3}\ +\ LiCl\ } }$

properties

Triethylgermanium hydride is a colorless liquid with a flash point of 8 ° C.

use

Triethylgermanium hydride is used as a catalyst for polymerizations of α- olefins . It can also be used as a cocatalyst for some reactions.

Individual evidence

1. ↑ ^{a b c d e f g h} data sheet Triethylgermanium hydride, 98% from Sigma-Aldrich , accessed on October 19, 2015 ( PDF ).
2. ↑ ^{a b c} Richard W. Weiss: Compounds of Germanium, Tin, and Lead, including Biological Activity and Commercial Application Covering the Literature from 1937 to 1964 . Springer Science & Business Media, 2013, ISBN 978-3-642-51889-8 , pp. 53–54 ( limited preview in Google Book search).
3. ↑ John E. Drake, Christa Siebert, Bernd Wöbke: Ge Organogermanium Compounds Part 4: Compounds with Germanium-Hydrogen Bonds . Springer Science & Business Media, 2013, ISBN 978-3-662-06324-8 , pp. 14 ( limited preview in Google Book search).