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

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

Codice CAS
1518-16-7
Sinonimi
TCNQ

Dimensioni Prezzo ($) Quantità Disponibilità
5g 64,70
25g 234,00
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7,7,8,8-Tetracyanoquinodimethane, 98%

MDL
MFCD00011664
EINECS
216-174-8

Proprietà chimiche

Formula
C12H4N4
Peso formula
204.19
Punto di fusione
ca 288° dec.
Solubilità
Insoluble in water.

Applicazioni

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.

Note

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

Letteratura

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).

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H302-H312-H331

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

Dichiarazioni precauzionali: 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.

Altri riferimenti

Beilstein
611604
Classe di rischio
6.1
Gruppo di imballaggio
III
Codice tariffe armonizzato
2926.90
TSCA
Yes
RTECS
GU4850000

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