Small Molecules:

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Azide anion ⟨N=N=N⟩- with overlap
Carbon dioxide ⟨O=C=O⟩
Carbon dioxide ⟨O=C=O⟩ with overlap
Carbon monoxide |C≡O|
Carbon monoxide |C=O⟩
Nitrogen |N≡N|
DiNitrogen oxide ⟨N=N=O⟩ with overlap