axial–[Fe(CO)₄]₂²⊖

Formula Unicode styled: 
axial–[Fe(CO)₄]₂²⊖
Compound name(s): 
bis-[tetracarbonyl-iron(1-)]
Central atom: 
Charge on formula unit (QN): 
1–
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: 
7
[MLXZ]𝘲 class: 
[MX1L4Z2]-
MLXZ class (ENC, equivalent neutral class): 
MX4L3
Summary of calculated classifications: 
Fe«V4C5O-IE18B7X1L4Z2»
Isomer label: 
𝘥-electron configuration = 𝘮 – VN: 
d4
𝘥-electron configuration = 𝘮 – ON: 
d9
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
d4
Attached atoms: 
C4Fe1
Phase: 
InChIKey (see www.inchi-trust.org): 
DBLMXLQJTBGLMP-UHFFFAOYSA-N