1965
DOI: 10.1002/zaac.19653360305
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Das Schwingungsspektrum der Methylendiphonsäure, ihrer Anionen und ihres Tetraäthylesters

Abstract: InhaltsubersichtDie Infrarot-und soweit moglich die RAMAN-spektren von Methylendiphosphaten, Dihydrogen-Methylendiphosphaten, der freien Saure und ihrem Tetraathylester wurden aufgenommen. Die CH,-, PCP-und PO,-Frequenzen sind einfach zuzuordnen, die Valenzschwingungen der letzteren wenig niedriger als fur Diphosphate. Die in Wasserstoffbriickenbindungen befindlichen OH-Gruppen werden niiher studiert durch Deuteriumaustausch und Untersuchung bei tiefen Temperaturen. SummaryInfrared and, when possible, RAMAN sp… Show more

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Cited by 12 publications
(6 citation statements)
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“…There are several experimental differences between our results for monomethylene These authors observe Raman bands at 1195 and 1083 cm-', whereas we find diphosphonic acid and those obtained by Steger and Rehhk [2]. the first one at a much lower wave number (1152cm-') and the second one to be split up (1090 and 1061 cm-I).…”
Section: (I)contrasting
confidence: 99%
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“…There are several experimental differences between our results for monomethylene These authors observe Raman bands at 1195 and 1083 cm-', whereas we find diphosphonic acid and those obtained by Steger and Rehhk [2]. the first one at a much lower wave number (1152cm-') and the second one to be split up (1090 and 1061 cm-I).…”
Section: (I)contrasting
confidence: 99%
“…We assign in the Raman and infrared spectra the bands that appear in the regions 560-480 cm-' and 460-410 cm-' to the three 6(P03), whereas the two p(P0,) arise in the range 319-272 cm-'. Our assignments agree with the studies of Steger et al [2] and Dupuy et al [9]. The infrared spectra of all the diphosphonic acids show a great number of bands.…”
Section: (I)supporting
confidence: 92%
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“…3.2. l. Effect of the pH on NMR spectroscopy. The 1 H-NMR and 3Ip-NMR spectra of aminophosphonic acid groups containing monomers and polymers are markedly influenced by the pH of the solution to be measured [23][24][25][26][27]. With monomers I and II as well as with the corresponding polymers IV and V, a pronounced shift of the signal to lower field takes place within 1 and 2 equivalents of added NaOH (Fig.…”
Section: Acid-base Equilibria Of the Monomers And Polymersmentioning
confidence: 98%