Trimethylthallium

Structural formula
General
Surname	Trimethylthallium
other names	Thallium trimethyl
Molecular formula	C 3 H 9 tsp
Brief description	colorless solid
External identifiers / databases
PubChem	137785
Wikidata	Q4463085
properties
Molar mass	249.49 g mol −1
Physical state	firmly
Melting point	38.5 ° C
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Trimethylthallium is an organic chemical compound of thallium from the group of organometallic compounds .

Extraction and presentation

Trimethylthallium can be obtained by reacting dimethylthallium chloride with methyllithium .

{\ displaystyle \ mathrm {(CH_ {3}) _ {2} TlCl + LiCH_ {3} \ longrightarrow Tl (CH_ {3}) _ {3} + LiCl}}

Alternatively, it can be obtained by methyllithium with methyl iodide and thallium (I) iodide .

{\ displaystyle \ mathrm {2 \ LiCH_ {3} + CH_ {3} I + TlI \ longrightarrow Tl (CH_ {3}) _ {3} +2 \ LiI}}

properties

Trimethylthallium is a colorless, self-igniting, highly volatile, very toxic, light-sensitive solid. It is sensitive to oxidation and hydrolysis and burns with a green flame. The compound is monomeric as a gas and in solution. From 90 ° C explosive decomposition occurs. It has a tetragonal crystal structure with the space group P 4 ₂ / n (space group no. 86) . Template: room group / 86

Individual evidence

↑ ^a ^b ^c ^d ^e ^f Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 874.
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ GM Sheldrick, WS Sheldrick: Crystal structure of trimethylthallium. In: Journal of the Chemical Society A: Inorganic, Physical, Theoretical. 1970, p. 28, doi : 10.1039 / J19700000028 .

[brauer-1] ↑ ^a ^b ^c ^d ^e ^f Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 874.

[NV-2] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[DOI10.1039/J19700000028-3] GM Sheldrick, WS Sheldrick: Crystal structure of trimethylthallium. In: Journal of the Chemical Society A: Inorganic, Physical, Theoretical. 1970, p. 28, doi : 10.1039 / J19700000028 .