By means of IR spectroscopy it was established that the complex formation of (ethylene-bis(nitrilodimethylene))- and ((oxydiethylene)bis(nitrilodimethylene))-tetrakisphosphonic acids with indium is effected by the interaction of the metal with the nitrogen and oxygen atoms. The relative proportion of the complexes of indium with ((oxydiethylene)bis(nitrilodimethylene))tetrakisphosphonic acid in which a nitrogen atom is coordinated by metal falls with decrease in pH.
When making nitrilotrimethylphosphonic acid by the reaction of formaldehyde and ammonia derivatives with phosphorus trichloride or phosphorus acid in aqueous medium the main product was methylaminodimethylphosphonic acid.
Werden äquimolare Mengen der Phosphorigsäuredialkylester (I), der Ketone (II) und von Äthylendiamin (III) auf 60°C erwärmt, so entstehen die Tetraalkylester (IV).
A new group of ethylenediaminodialkylphosphonic acid esters and higher alcohols has been synthesized.
AbstractFormaldehyd (II) und Diäthylphosphit (III) reagieren mit N,N′‐Dimethyl‐äthylendiamin (I) zum Tetraäthylester (IV), der in kochender Salzsäure zur Säure (V) verseift wird.
New organophosphorus complexing agents were synthesized: ethylenediamino-N,N'-diethylphosphonic, N,N′-dimethylethylenediamino-N,N′-dimethylphosphonic, and N,N′-dimethylethylenediamino-N, N′-diethylphosphonic acids and also the iodomethylate of the last acid.
M. V. Rudomino合作论文数9Martin I Kabachnik合作论文数6N. M. Dyatlova合作论文数4AV KESSENIKH合作论文数3T. Ya. Medved'合作论文数3EI MEDVEDEVA合作论文数2Yu. M. Polikarpov合作论文数2K. F. Paraskevova合作论文数2N. A. Kaslina合作论文数2V. N. Avilina合作论文数2N. D. Konevskaya合作论文数2V. P. Markhaeva合作论文数2I. A. Poletaeva合作论文数2GE KODINA合作论文数1T. P. Klimova合作论文数1Ia Polyakova合作论文数1G. E. Kodina合作论文数1Bv Zhadanov合作论文数1Na Kaslina合作论文数1T. Ya. Medwed合作论文数1Tamara P. Klimova合作论文数1
