Details

Autor(en) / Beteiligte

• Harriss, Michael G
• Milne, John B

Titel

The trifluoroacetic acid solvent system. Part V. Cryoscopic measurements

Ist Teil von

• Canadian journal of chemistry, 1976-10, Vol.54 (19), p.3031-3037

Ort / Verlag

Ottawa, Canada: NRC Research Press

Erscheinungsjahr

1976

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Measurement of freezing point depressions for the non-electrolytes, CCl 4 . CH 3 SO 2 F, and (CF 3 CO) 2 O permit calculation of the cryoscopic constant for trifluoroacetic acid, HOTFA. Water is shown to give freezing point depressions lower than those for non-electrolytes and this is attributed to association. Freezing point depressions for NaOTFA, KOTFA, and CsOTFA have been measured and accounted for in terms of ion-pair dissociation constants previously determined from electrical conductivity measurements. The results cast doubt on the existence of triple ions in this solvent.