[Pb{Cr(CO)₅}₃]²⁻

Formula Unicode styled: 
[Pb{Cr(CO)₅}₃]²⁻
Compound name(s): 
tris(pentacarbonyl-chromium)-lead(2-)
Central atom: 
Charge on formula unit (QN): 
2–
Compound type: 
Notes: 

The anion [{(CO)₅Cr}₃Pb]²⊖ (trigonal‐planar coordination at the central metal Pb) with short Pb−Cr bonds is said to be an organometallic equivalent of [CO₃]²⊖. The conjugated Pb‐pπ–Cr‐dπ bonding corresponds to the conjugated pπ–pπ bonding system of the carbonate ion.

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: 
4
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4
Summary of calculated classifications: 
Pb«V4C3O-IVE8B4Z0L0X4»
𝘥-electron configuration = 𝘮 – VN: 
𝘥-electron configuration = 𝘮 – ON: 
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
Attached atoms: 
Cr3
Phase: 
InChIKey (see www.inchi-trust.org): 
KOMUSUWGVTVLGJ-UHFFFAOYSA-N
Formula Unicode generic: 
[Pb{Cr(CO)₅}₃]²⁻