P-C3N4 Structure

However, in some reports, electron diffraction patterns of the carbonitride films that were indexed as P-C3N4 structure " were later observed to fit to other carbon phases. It was also shown that the published diffraction... 

The other type of graphitic structure considered recently by Teter and Helmley [35] also contains 14 atoms in the unit cell but is somewhat diflferent to the P-C3N4 structures as here two possible C-N bond lengths are in the hexagonal plane. This structure is shown in Fig. 4 and emphasizes C-N bonding between layers. 

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