SPECTROSCOPIC STUDIES OF 2-AMINOETHYLAMINOMETHANEPHOSPHONIC ACID

Abstract

Spectroscopic identifications of 2 Amino ethylaminom ethane phosphoric acid were carried out. ³¹ P nmr, and ¹³ C nmr were used in the spectroscopic characterization of the material. ³¹ P chemical shifts for 2-Aminoethylaminomethanephosphonic acid in D₂0 increase with chain length from 11.0ppm to a limiting value of ca. 27 ppm. ¹H nmr spectra were complex and difficult to employ for the assignment of structures.

¹³C nmr spectra, however, provided a valuable means for identifying the aminophosphonic acid; with characteristic phosphoruscarbon coupling constants of ^IJ_PC 130. 1, ³J_PCNC 4-8 H_z.