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Carbon Results

The following results were achieved from CP MAS experiments for the three different solid forms of Indomethacin. The numbered peaks correspont to the respective Carbon nuclei on the molecule below. Peak identification was made possible using a combination of CASTEP and INEPT results.

molecule

 

Gamma

Gamma

Alpha

Because there are now three Indomethacin molecules per unit cell, the peaks in the Carbon spectrum (below) appear as triplets.

Alpha

Ind-Sac

New peaks appear in the Carbon-13 spectrum due to the presence of Carbon nuclei from the Saccharin molecule. Most are lost in the aromatic region except for Carbons 15 and 20.

Sacch