[Cr(Se₂)(CO)₂(Cp)]⊖

Formula Unicode styled: 
[Cr(Se₂)(CO)₂(Cp)]⊖
Compound name(s): 
Dicarbonyl-(η-cyclopentadienyl)-(diselenido-Se,Se')-chromium(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: 
[MX3L4]-
MLXZ class (ENC, equivalent neutral class): 
MX2L5
Summary of calculated classifications: 
Cr«V2C7OIIE18B7Z0X3L4»
𝘥-electron configuration = 𝘮 – VN: 
d4
𝘥-electron configuration = 𝘮 – ON: 
d4
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
d4
Attached atoms: 
C7Se2
Phase: 
InChIKey (see www.inchi-trust.org): 
OOIMPUAYFOYVAS-UHFFFAOYSA-N