Trimethylsilyl isocyanate

Structural formula
General
Surname	Trimethylsilyl isocyanate
other names	Isocyanatotrimethylsilane
Molecular formula	(CH 3 ) 3 SiNCO
Brief description	colorless liquid
External identifiers / databases
CAS number 1118-02-1 EC number 214-256-8 ECHA InfoCard 100.012.961 PubChem 70696 Wikidata Q15632694
properties
Molar mass	115.21 g mol −1
Physical state	liquid
density	0.851 g cm −3 (25 ° C)
Melting point	−49 ° C
boiling point	90-92 ° C
Refractive index	1.396 (20 ° C)
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 225-319-331-334-335 P: 210-261-305 + 351 + 338-311
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

Trimethylsilyl isocyanate is a chemical compound from the isocyanate group .

Extraction and presentation

Trimethylsilyl isocyanate can be obtained by reacting trimethylsilyl chloride with potassium cyanate .

${\displaystyle \mathrm {(CH_{3})_{3}SiCl+KOCN\longrightarrow (CH_{3})_{3}SiNCO+KCl} }$

It can also be obtained from the corresponding methylchlorosilane and silver cyanate or lead cyanate .

properties

Trimethylsilyl isocyanate is a colorless liquid with a pungent odor that hydrolyzes in water and in humid air .

use

Trimethylsilyl isocyanate is used for the conversion of isocyanates into carbodiimides with cyclopentadienyl Fe (CO) ₂ or -Mn (CO) ₃ catalysts. It is also used for the carbamoylation of aromatic hydrocarbons and alcohols .

Individual evidence

1. ↑ ^{a b c d e f g h} data sheet trimethylsilyl isocyanate, 85% from Sigma-Aldrich , accessed on January 9, 2014 ( PDF ).
2. ↑ Data sheet Trimethylsilyl isocyanate, 94% from AlfaAesar, accessed on January 9, 2014 ( PDF )(JavaScript required) .
3. ↑ ^{a b c} Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 711.