International Journal of Spectroscopy / 2013 / Article / Tab 2

Research Article

Intermolecular Interactions between Eosin Y and Caffeine Using 1H-NMR Spectroscopy

Table 2

The 1H-NMR chemical shifts ( ) in ppm of the caffeine protons in the samples of caffeine alone and in a mixture of caffeine and eosin Y.

Sample

Caffeine3.343.503.957.90
Eosin Y + caffeine3.193.393.777.67

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