7,7,8,8-Tetracyanoquinodimethane

• Catalog No.: A10779
• CAS Number: 1518-16-7
• M. F.: C12H4N4
• M. W.: 204.18696
• Purity: 98%

SYNONYMS

• Title: 7,7,8,8-四氰基对醌二甲烷
• IUPAC name: 2-[4-(dicyanomethylidene)cyclohexa-2,5-dien-1-ylidene]propanedinitrile
• IUPAC Traditional name: tetracyanoquinodimethane
• Synonyms: TCNQ

DATABASE IDS

• MDL Number: MFCD00011664
• Beilstein Number: 611604
• EC Number: 216-174-8
• CAS Number: 1518-16-7

PROPERTIES

• Purity: 98%
• Melting Point: ca 288°C dec.
• GHS Hazard statements: H331-H302-H312
• European Hazard Symbols: X
• GHS Precautionary statements: P261-P280-P302+P352-P321-P405-P501A
• Risk Statements: 20/21/22
• RTECS: GU4850000
• Safety Statements: 36/37
• TSCA Listed: 是
• Hazard Class: 6.1
• UN Number: UN3439
• Packing Group: III

REFERENCES

• 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).
• 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).