�ber die Abh�ngigkeit der Geschwindigkeit der Rohrzuckerinversion vom Gehalt des Wassers an schwerem Wasser

The Deuterium Isotope Effect

“…Curve a, decomposition of diazoacetic ester (78) ; curve b, acid-catalyzed hydrolysis of acetal(171); curve c, inversion of sucrose(81); curve d, acid-catalyzed hydrolysis of methyl acetate…”

Growth of Germ Tubes of Erysiphe Spores in Deuterium Oxide

“…In general, according to theory, compounds containing the heavier isotope should be less reactive than those containingf the lighter form (Eyring and Sherman, 1933;Urey and Teal, 1935). In some cases the velocitv aT)pears to be approximately the same in the two liquids (Hughes, Yudkin, Kemp, and Rideal, 1934;Fox, 1935), but usually it differs to a greater or lesser extent (Anderson and Harvey, 1934;Gross, Suess, and Steiner, 1934;Hammill and La Mer, 1934;Schwartz, 1934;Wynne-Jones, 1934;Fox and Craig, 1935;Steacie, 1934Steacie, , 1935Maclit and Bryan, 1936). In some cases the velocitv aT)pears to be approximately the same in the two liquids (Hughes, Yudkin, Kemp, and Rideal, 1934;Fox, 1935), but usually it differs to a greater or lesser extent (Anderson and Harvey, 1934;Gross, Suess, and Steiner, 1934;Hammill and La Mer, 1934;Schwartz, 1934;Wynne-Jones, 1934;Fox and Craig, 1935;Steacie, 1934Steacie, , 1935Maclit and Bryan, 1936).…”

Heavy hydrogen as an indicator of the course of chemical reactions

“…Moelwyn-Hughes and Bonhoeffer (14) found that the catalytic effect of hydrogen ions in 90% D20 solution is 60% greater than in ordinary water. Gross, Suess, and Steiner (15), in their study of the reaction in water-deuterium oxide mixtures, found a continual increase in the reaction rate with increase in D20 content. These results, when considered in conjunction with conclusion (a) given above, definitely exclude as the rate-determining process the transfer of a hydrogen ion.…”