caa a22 4500 467947147 CHVBK 20180405193738.0 cr unu---uuuuu 170328e20050101xx s 000 0 eng 10.1007/s10975-005-0035-6 doi (NATIONALLICENCE)springer-10.1007/s10975-005-0035-6 (NATIONALLICENCE)springer-10.1007/PL00021982 Ionizing properties of complexes with strong symmetrical hydrogen bonds in acid solutions in aprotic solvents [Elektronische Daten] [I. Kislina, S. Sysoeva, N. Librovich] The acidity functions H0 of solutions of trifluoroacetic acid (TFA) in DMF and methanesulfonic acid (MSA) in 2-pyrrolidone over an acid (HA) concentration range of 0-100% and of H2SO4 solutions in 2-pyrrolidone (66.7-100 mol % HA) at 25°C were determined using the indicator method. Data were obtained on the relative ionizing powers of the quasi-ion pairs S⋯H⋯A (S is a solvent molecule) formed by DMF with acids (HCl, MSA, and TFA) and by MSA with DMF and 2-pyrrolidone. The effects of the acid anion (with MSA and H2SO4 solutions in 2-pyrrolidone acting as examples) and the counterion SH+ (with MSA solutions in DMF and 2-pyrrolidone acting as examples) on the ionizing power of (A⋯;H⋯A)− ions with strong symmetrical H-bonds were studied. It was found that, under comparable conditions, the replacement of a 2-pyrrolidone molecule by a DMF molecule in the SH+ cation insignificantly decreased the acidity of solution, whereas the (A⋯;H⋯A)− ions in H2SO4 solutions exhibited a much higher ionizing power than that of structurally similar anions in MSA solutions. MAIK "Nauka/Interperiodica”, 2005 Kislina I. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 117977, Moscow, Russia aut Sysoeva S. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 117977, Moscow, Russia aut Librovich N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 117977, Moscow, Russia aut Kinetics and Catalysis Nauka/Interperiodica 46/1(2005-01-01), 37-42 0023-1584 46:1<37 2005 46 10975 https://doi.org/10.1007/s10975-005-0035-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10975-005-0035-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kislina I. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 117977, Moscow, Russia aut NATIONALLICENCE 700 1- Sysoeva S. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 117977, Moscow, Russia aut NATIONALLICENCE 700 1- Librovich N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 117977, Moscow, Russia aut NATIONALLICENCE 773 0- Kinetics and Catalysis Nauka/Interperiodica 46/1(2005-01-01), 37-42 0023-1584 46:1<37 2005 46 10975 NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00021982 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer