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1518-16-7 - 7,7,8,8-Tetracyanoquinodimethane, 98% - TCNQ - A10779 - Alfa Aesar

A10779 7,7,8,8-Tetracyanoquinodimethane, 98%

CAS-Nummer
1518-16-7
Synonyme
TCNQ

Größe Preis ($) Menge Verfügbarkeit
5g 64,70
25g 234,00
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7,7,8,8-Tetracyanoquinodimethane, 98%

MDL
MFCD00011664
EINECS
216-174-8

Chemische Eigenschaften

Formel
C12H4N4
Molmasse
204.19
Schmelzpunkt
ca 288° dec.
Löslichkeit
Insoluble in water.

Anwendungen

7,7,8,8-Tetracyanoquinodimethane is an electron-acceptor molecule used to form charge-transfer superconductors. It is an effective catalyst used for the ?-chlorination of carboxylic acids using chlorosulfonic acid; the presence of TCNQ suppresses competing free-radical chlorination.

Bemerkungen

Keep container tightly sealed. Store in cool, dry conditions in well sealed containers. Incompatible with oxidizing agents.

Literaturverweise

K. Sutter.; J. Hulliger.; P. Günter. Photorefractive effects observed in the organic crystal 2-cyclooctylamino-5-nitropyridine doped with 7,7,8,8-tetracyanoquinodimethane. Solid State Communications. 1990, 74, (8), 867-870.

Long, R. E.; Sparks, R. A.; Trueblood, K. N. The crystal and molecular structure of 7, 7, 8, 8-tetracyanoquinodimethane. Acta Crystallographica. 1965, 18 (5), 932-939.

Electron-acceptor, forming stable radical anions: J. Am. Chem. Soc., 82, 6408 (1960); 84, 3370, 3374 (1962).

Forms charge-transfer complexes with electron-rich donors: J. Am. Chem. Soc., 95, 948 (1973).

For a review of the differences between "metallic" and "non-metallic" salts of TCNQ, see: Acc. Chem. Res., 12, 79 (1979).

Effective catalyst for the ɑ-chlorination of carboxylic acids using chlorosulfonic acid; the presence of TCNQ suppresses competing free-radical chlorination: J. Org. Chem., 48, 1364 (1983).

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H302-H312-H331

Harmful if swallowed. Harmful in contact with skin. Toxic if inhaled.

Sicherheitshinweise: P260u-P201-P280h-P303+P361+P353-P305+P351+P338-P301+P330+P331-P304+P340-P310a-P405-P501a

Obtain special instructions before use. Wear protective gloves/clothing. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Beilstein
611604
Gefahrenklasse
6.1
Verpackungsgruppe
III
Harmonized Tariff Code
2926.90
TSCA
Yes
RTECS
GU4850000

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