Trifluoroacetic Acid CF3COOH

Fluorhydroxyapatite solid solutions can be prepared by the sol-gel method [134,135]. Cheng et al. reported the control of fluoride content in fluorhydroxyapatite solid solutions by the amounts of triethanolamine (N(CH2CH20H)3) and trifluoroacetic acid (CF3COOH) in the mixed ethanol solutions of Ca(N03)2 and P0(CH2CH20H)x(0H)3 x with a Ca/P ratio of 1.67 [134]. After evaporation of the mixed ethanol solution at 150°C on a hot plate, the powder obtained, comprising a homogeneous mixture of calcium nitrate crystallites and amorphous calcium phosphates, is then heated at 500 or 900°C for 1 h to be transformed into the pure apatitic phase. 

TRIFLUOROACETIC ACID CF3COOH and TRIFLUOROACETIC ANHYDRIDE (CF3C0)20... 

The c/oso-cluster anion [BuHn]2" reacts with trifluoroacetic acid CF3COOH to give the HK >-undecaborate [BnH CFsCOO)]", according to Eq. (1). 

Treatment of aromatic compounds with thallium trifluoroacetate, T1(00CCF3)3, dissolved in trifluoroacetic acid (CF3COOH) gives rapidly and jn... 

Me2Py dimethylpyridines = lutidines TFA trifluoroacetic acid CF3COOH... 

Orzol, M., T. Sedlacko, R. Balog et al. 2006. Reactions in nanofihns of trifluoroacetic acid (CF3COOH) driven by low energy electrons. Int J Mass Spectrom 254 63-69. 

The acid strength of carboxylic acids also increases as the number of electronegative atoms in the acid increases. For example, trifluoroacetic acid (CF3COOH) has K = 5.0 X 10 the replacement of three hydrogen atoms of acetic acid with more electronegative fluorine atoms leads to a large increase in acid strength. 

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