| # | Species | Formula |
| 5054 | Neodymium complex, CCDC: YURMUT (Geo) | C22H28N5O16Nd | |
| 5055 | Neodymium complex, CCDC: ZAMHIE (Geo) | C10H18N2O11Nd | |
| 5056 | Neon bromide anion (Geo) | NeBr | |
| 5057 | Neon chloride anion (Geo) | NeCl | |
| 5058 | Neon fluoride anion (Geo) | FNe | |
| 5059 | Neon potassium cation (Geo) | NeK | |
| 5060 | Neon sodium cation (Geo) | NeNa | |
| 5061 | Neopentane (Geo) | C5H12 | |
| 5062 | Neon, atom | Ne | |
| 5063 | Neopentane | C5H12 | |
| 5064 | Neopentyl, anion (Deleted) | C5H11 | |
| 5065 | NF2-CN (Geo) | CN2F2 | |
| 5066 | NF2. | NF2 | |
| 5067 | Nitrogen trifluoride (Geo) | NF3 | |
| 5068 | NH2-NO2 (Geo) | H2N2O2 | |
| 5069 | Ammonia (Geo) | H3N | |
| 5070 | Ni 2O and 2Br (Geo) | C3H8O2NiBr2 | |
| 5071 | Ni 2O and 2Cl (Geo) | C3H8O2Cl2Ni | |
| 5072 | Ni 2O and 2F (Geo) | C3H8O2F2Ni | |
| 5073 | Ni 2O and 2I (Geo) | C3H8O2NiI2 | |
| 5074 | Ni 2S and 2Br (Geo) | C7H16S2NiBr2 | |