With the help of the ascertained band parameters, standard and calibration spectra from the infrared measurements in substances, which contain H-O- and C=O-bond groups, the methodology to observe the reactions with infrared spectroscopy as well as the interpretation experienced an essential support. (42-45 Wörter)
In this connection, the problems of the keto-enol tautomerism were studied in acetylacetone and (iso-) ascorbic acids. (17-18 Wörter)
It furthermore turned out, that the square root values of the integral extinction coefficient of the O=C-stretching vibration modes, which are proportional to the dipole moment changes, varied comparably by the application of neighboring bond groups. (36-38 Wörter)
It was able to pursue the phenomenon of the hydration of keto groups with infrared spectroscopy in a simple molecule (butanal). (21 Wörter)

With the dehydroascorbic acids in solution the interpretation is still ambiguously because of several mutually effects of influence.(18 Wörter) However, clear differences arose in the H-O- and O=C-stretching vibration area between crystalline bis-DHA and the hydrated DHA form. (19-22 Wörter) Unambiguously the deuteration of the HO groups succeeded at bis-DHA. (10-11 Wörter) For the process of saponification of the DHA, there were determined functional coherencies of temperature and pH with an activation energy of 79.3 kJ/mol. (24-25 Wörter) With the help of the electronic data processing (EDP) one was able to separate up to three infrared standard spectra from D2O solutions.(23 Wörter) These are DHA, DKG and another reductone-like substance.(8-9 Wörter)

The pKa value of the soap making product (DKG), investigated by pH-titration and by infrared spectroscopy, corresponds to known pKa values of oxocarboxylic acids (24-25 Wörter). The pKa value of the soap making product, investigated by titration of pH and infrared spectroscopy, corresponds to known values of oxocarbonic acids (23 Wörter). The development of CO2 in spectra of pellets can be led back on the decarboxylating (decarboxylising, decarboxylizing) DKG (18 Wörter). However, DKG is still quite stable in high concentrations in solution at 37°C (13-14 Wörter). The DKG decomposition reactions were qualitatively examined, outgoing from DKG-stock solutions also in the neutral and alkaline pH area, except with the infrared spectroscopy, still with the spectral photometry, the fluorescence and also the electron paramagnetic resonance (EPR) spectroscopy (39-40 Wörter). From DHA as well as from DKG it developed a ruby-red substance at high pH value (16-17 Wörter). It is unstable against aerial influences and can be brought in connection with radicalic processes (15 Wörter). One has found an EPR signal, which points at R-O• radicals (11-12 Wörter). It is problematic that reduction and oxidation are influenced by instabilities of DHA and DKG (15 Wörter). Therefore equimolar NADH concentrations reduce only incompletely the DHA in the physiological pH area because of the additional DHA saponification (20 Wörter). The same is valid with reductions by H-S-group containing substances for which an apparent reaction order similar to the DHA saponification was found (23-25 Wörter). However, an intermediate state which the real reduction reaction of DHA follows, is infrared spectroscopically proved by reactions with H-S groups (21-22 Wörter). Clear infrared spectroscopical differences were found at oxidation reactions between derivatives which are incapable or capable to form a C(6)-O-C(3) - ring (21-25 Wörter).

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każdy spotkał się EPR sygnał, który ukazuje na R-O• pierwiastki. To jest problematyczna tamta redukcja i oksydacja wpłynęła przez niestałoś DHA i DKG. Przeto equimolar NADH skupiska redukują tylko niecałkowito DHA w fizjologicznym ph terenie gwoli dodatkowemu DHA zmydlaniu. Toż ważny z redukcjami przez H-S-GRUPA zawierające istoty dla który pozorny rząd reakcji podobnej do DHA zmydlania występował. Jakkolwiek, pośredni stan która prawdziwa redukcyjna reakcja DHA pójści, infrared spectroscopically wypróbowane przez reakcje z H-S grupy. Przejaśnienie infrared spectroscopical różnice występowały na reakcjach oksydacji między derywatami którymi niezdolne albo zdolny utworzyć C (6)-O-C (3) - kolisko.

Bir tane R-O• radikallarına işaretleyen bir EPR sinyalı buldu. O şüpheli DHA ve DKG instabilities tarafından azalma ve oxidation etkilen. O nedenle equimolar sadece eksik halde fizyolojik pH alanındaki DHA ek DHA saponification because of. Aynı DHA saponification benzer açık bir tepki emiri için maddeler H S grupu içeriyor tarafından azalmalarla geçerli. Ancak, gerçek DHA tepkisi follow orta bir hükümet, tepkiler tarafından ispatlanan kızıl-öte spectroscopically H S gruplarıyla mı. Farklılıklar güçsüz veya yetenekli olan türevlerin arasındaki oxidation tepkilerinde bulunan kızıl-öte açık spectroscopical bir C(6) O biçimlendirir - C(3) - - ring.