Table 1: Values of R2 for linear fitted curves.

Name of modifierR2 (blind)R2 (proper)

2,2’-((4-chlorophenyl)imino)diethanol0.99510.9997
2,2’-((4-bromophenyl)imino)diethanol0.92710.9501
2,2’-((4-iodophenyl)imino)diethanol0.99990.9988
1,1’-((4-chlorophenyl)imino)dipropan-2-ol0.99180.9941
1,1’-((4-bromophenyl)imino)dipropan-2-ol0.98400.9918
1,1’-((4-iodophenyl)imino)dipropan-2-ol0.99840.9997