pKa values and gas-phase acidities of superacid molecul

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250 256 255.5 HSbF 6 250.8 HAuF 6 250 243 240 HB(CF3 ) 4 NC NC H NC CN C H H H H H Cl Cl Cl CN CN - H + CN NC P CN - B CN H + NC CN - Cl Cl H + Cl Cl Cl Acidity in the gas phase Cl CCl Cl Cl 225 200 225 213 C CN NC CN NC CN - F NC NC CN CN NC C F F H + F CN F F F F < 175 F - F CN F F CF H + 3 C F 3 C CF 3 CF F3 C CF 3 3 - F F 3 C 3 C CF 3 CF 3 F 3 C H + CF 3 Cl Cl Cl Cl Cl H + Cl GA = 241 ± 29 kcal/mol - Meyer et al, JACS, 2009, 131, 18050 -Kütt et alChem Phys Chem, 2008 - Kütt et al, JOC, 2008, 73, 2607 - Leito et al, J Mol Stru Theochem. 2007, 815, 41 - Leito et al, JPC A, 2009, 113, 8421 - Koppel et al, JACS, 2000, 31 122, 5114 Thanks to all these people! 32 16
Collaboration • Y.L. Yagupolskii (IOC, Ukrainian Academy of Sciences, Kiev) • I. Krossing, D. Himmel (Freiburg University) • A.A. Kolomeitsev, G.-V. Röschenthaler (IIPC, University of Bremen) • M. Rueping (Aachen University) • V.M. Vlasov (IOC, Russian Academy o Sciences, Novosibirsk) • M. Mishima (IMCE, Kyushu University) 33 Overview: http://tera.chem.ut.ee/~ivo/HA_UT/ 34 17
Page 4 and 5: What is a superacid? • Superacidi
Page 6 and 7: Solvent • As low basicity as poss
Page 8 and 9: UV-Vis ΔpK a measurement Compound
Page 10 and 11: 67 4NO 2 C 6 H 4 SO 2 NHTos 10.04 6
Page 12 and 13: Important aspects for superacids
Page 14 and 15: Fluorine • Highly electronegative

pKa values and gas-phase acidities of superacid molecul

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