
TY  - JOUR
A1  - Appleton, TG 
A1  - Hall, JR 
A1  - Harris, AD 
A1  - Kimlin, HA 
A1  - McMahon, IJ 
T1  - N.M.R. study of acid-base equilibria of aminoalkylphosphonic acids, <sup>+</sup>NH<sub>3</sub>(CH<sub>2</sub>)<sub>n</sub>PO<sub>3</sub>H<sup>-</sup> (n = 1,2,3): Evidence for cyclization in solution
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1984
VL  - 37
IS  - 9
SP  - 1833
EP  - 1840
KW  - 
UR  - https://doi.org/10.1071/CH9841833 
N2  - The variations with pD of 31P, 13C and lH n.m.r. chemical shifts for D2O solution of MePO3H2 and NH2(CH2)nPO3H2 (n = 1, 2, 3) have been studied. In the aminoalkylphosphonic acids, &#948;p is profoundly affected by amine deprotonation. 'Cyclic' conformations in which the amine group is close to the phosphonate group are proposed, with the strength of the amine-phosphonate interaction decreasing as n increases. 
ER  -

