
TY  - JOUR
A1  - Bhindi, AK 
A1  - Chiswell, B 
A1  - Rauchle, GP 
T1  - Site of Chlorine Interaction With a Cation-Exchange Resin (Chelex-100)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1992
VL  - 45
IS  - 7
SP  - 1143
EP  - 1153
KW  - 
UR  - https://doi.org/10.1071/CH9921143 
N2  - X-Ray photoelectron spectroscopy, 13C and 1H solution-state n.m.r., and 13C solid-state n.m.r. were used in chlorination studies on compounds, which act as models for the exchange group and the styrene divinylbenzene copolymer backbone of Chelex-100, to determine the site and mechanism of chlorine attack. Results indicate that the resin cleaves upon chlorination, and a cleavage mechanism, involving initial attack by chlorine on the exchange group imine nitrogen electron lone pairs, is proposed. The N-halo quaternary species formed loses a molecule of hydrogen chloride to give a Schiff base, which undergoes hydrolysis to an aldehyde and an ammonium salt. 
ER  -

