=C(I)₂ (diiodomethylidene)

[C{=C(I)₂}₂]

Formula Unicode styled: 
[C{=C(I)₂}₂]
Compound name(s): 
tetraiodoallene
Central atom: 
Carbon
Attached groups: 
=C(I)₂ (diiodomethylidene)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2OOE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[C{=C(I)₂}]₂

Formula Unicode styled: 
[C{=C(I)₂}]₂
Compound name(s): 
1,1,4,4-tetraiodobutatriene
Central atom: 
Carbon
Attached groups: 
=C(I)₂ (diiodomethylidene)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2OOE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4