Four atoms

Four atoms

C2H2

Acetylene [11] [12]

Ethyne [10]

Sol Liq Gas [12]

Same charge position

[10] - [12]

H2CN(+) or (−)

Methyleneamino

radical [10]

Different charge position

[10]

C2N2

Cyanogen [10] - [12]

Sol Liq Gas [12]

Same charge position

[10] - [13]

C2F2

Difluoroacetylene [12]

Difluorovinylene [10]

Sol Liq [10]

[10] [12]

C3N(−)

Cyanoacetylene ion

[12]

N2H2

Diazene [10] - [12]

Sol Liq [12]

Different charge position

[10] - [12]

COCl2 or CCl2O

Phosgene [10] - [12]

Sol Liq Gas [12]

Different charge position

[10] - [12]

CHO2(−)

Formic ion

Format

[11]

HN3

Hydrazoic acid

[10] - [12]

Sol Liq Gas

[10] [12]

Different charge position

Other structure

[10] - [12]

[12]

N2O2(2−)

Hyponitrite ion

[10] - [12]

From hyponitrous acid

Solution [12]

No charge position [12]

Different charge position

[10] - [12]

HCNO

Fulminic acid

[10] - [12]

Same or different

Charge position

[10] - [12]

[12]