Triphenyl germanium hydride

Structural formula
General
Surname	Triphenyl germanium hydride
other names	Triphenylgermanium (IV) hydride Triphenylgerman
Molecular formula	C 18 H 16 Ge
Brief description	white solid
External identifiers / databases
CAS number 2816-43-5 EC number 220-569-0 ECHA InfoCard 100.018.699 PubChem 76060 Wikidata Q15628292
properties
Molar mass	320.496 g mol ? 1
Physical state	firmly
Melting point	40-43 ° C
boiling point	127–128 ° C (0.01 hPa)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 302-312-332 P: 280
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

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

Extraction and presentation

Triphenyl germanium hydride can be obtained by reacting triphenyl germanium chloride and zinc dust in ethanol or by reacting triphenyl germanium chloride or triphenyl germanium bromide with lithium aluminum hydride or sodium borohydride .

${\displaystyle \mathrm {4\ Ge(C_{6}H_{5})_{3}Br+Li[AlH_{4}]\longrightarrow 4\ Ge(C_{6}H_{5})_{3}H+LiBr+AlBr_{3}} }$

properties

Triphenylgermanium hydride is a white crystalline solid. The compound is dimorphic, the more stable α-form melts at 41–45 ° C, the β-form at 27 ° C. It reacts with a number of vinyl derivatives without a catalyst . The pyrolysis at 300 ° C results Tetraphenylgermanium and Diphenylgermaniumdihydrid .

${\displaystyle \mathrm {2\ Ge(C_{6}H_{5})_{3}H\longrightarrow Ge(C_{6}H_{5})_{2}H_{2}+Ge(C_{6}H_{5})_{4}} }$

use

Triphenylgermanium hydride can be used as a polymerization inhibitor.

Individual evidence

1. ↑ ^{a b c d e f} data sheet Triphenylgermanium hydride, from Sigma-Aldrich , accessed on October 7, 2017 ( PDF ).
2. ↑ ^{a b c d} Jane E. Macintyre: Dictionary of Organometallic Compounds . CRC Press, 1994, ISBN 978-0-412-43060-2 , pp. 1742 ( limited preview in Google Book search).
3. ↑ ^{a b} 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. 52 ( limited preview in Google Book search).
4. ↑ John E. Drake, Christa Siebert: Ge Organogermanium Compounds Part 4: Compounds with Germanium-Hydrogen Bonds . Springer Science & Business Media, 2013, ISBN 978-3-662-06324-8 , pp. 100 ( limited preview in Google Book search).
5. ↑ BL Shaw: Inorganic Hydrides The Commonwealth and International Library: Chemistry Division . Elsevier, 2013, ISBN 978-1-4831-6032-0 , pp. 49 ( limited preview in Google Book search).