[Fe(12-crown-4-κ⁴O)₂]²⊕

Formula Unicode styled: 
[Fe(12-crown-4-κ⁴O)₂]²⊕
Compound name(s): 
bis(12-Crown-4-O,O',O'',O''')-iron(2+)
Central atom: 
Charge on formula unit (QN): 
2+
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Coordination Number (CN, sum of attached group denticities): 
Oxidation Number (ON) (Roman numerals): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Bond number (BN) = 𝘹 + 𝘭 + 𝘻: 
8
[MLXZ]𝘲 class: 
[ML8]2+
MLXZ class (ENC, equivalent neutral class): 
MX2L6
Summary of calculated classifications: 
Fe«V2C8OIIE22B8Z0X0L8»2⊕
𝘥-electron configuration = 𝘮 – VN: 
d6
𝘥-electron configuration = 𝘮 – ON: 
d6
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
d6
Attached atoms: 
O8
Phase: 
InChIKey (see www.inchi-trust.org): 
XEEYBQQBJWHFJM-UHFFFAOYSA-N