Journal of Chemistry

Research Article

Synthesis, Characterization, and Biological Evaluation of a New Hydrogen-Bonded Charge-Transfer Complex of 2-Amino-4-methoxy-6-methylpyrimidine

Table 2

The absorption data, absorption maxima (λCT), formation constant (KCT), and molar absorptivity (ε) of the [AMMP-DHBQ] complex in MeOH at different temperatures.
Concentration of donor AMMP (mol L−1)Concentration of acceptor DHBQ (mol L−1)Absorbance at λCT (nm)Formation constant (KCT) (L mol−1)Molar absorptivity (εCT) (L cm−1 mol−1)Correlation coefficient (R2)
At 20°C At 488 nm14.19 × 1031.428 × 1030.9955
 2.0 × 10−45.0 × 10−40.182   
 4.0 × 10−45.0 × 10−40.274   
 6.0 × 10−45.0 × 10−40.341   
 8.0 × 10−45.0 × 10−40.393   
 10 × 10−45.0 × 10−40.436   
At 25°C At 488 nm9.333 × 1031.428 × 1030.9912
 2.0 × 10−45.0 × 10−40.176   
 4.0 × 10−45.0 × 10−40.266   
 6.0 × 10−45.0 × 10−40.331   
 8.0 × 10−45.0 × 10−40.381   
 10 × 10−45.0 × 10−40.432   
At 30°C At 488 nm8.889 × 1031.250 × 1030.9784
 2.0 × 10−45.0 × 10−40.166   
 4.0 × 10−45.0 × 10−40.250   
 6.0 × 10−45.0 × 10−40.316   
 8.0 × 10−45.0 × 10−40.361   
 10 × 10−45.0 × 10−40.424   
At 35°C At 488 nm6.229 × 1031.250 × 1030.9787
 2.0 × 10−45.0 × 10−40.150   
 4.0 × 10−45.0 × 10−40.240   
 6.0 × 10−45.0 × 10−40.302   
 8.0 × 10−45.0 × 10−40.347   
 10 × 10−45.0 × 10−40.388   
At 40°C At 488 nm5.228 × 1031.250 × 1030.9964
 2.0 × 10−45.0 × 10−40.137   
 4.0 × 10−45.0 × 10−40.220   
 6.0 × 10−45.0 × 10−40.272   
 8.0 × 10−45.0 × 10−40.325   
 10 × 10−45.0 × 10−40.355   
The correlation coefficient of the BH plot.