[Er(Cl)₂(OH₂)₂(12-crown-4-κ⁴O)]⊕

Formula Unicode styled: 
[Er(Cl)₂(OH₂)₂(12-crown-4-κ⁴O)]⊕
Compound name(s): 
(12-Crown-4-O,O',O'',O''')-diaqua-dichloro-erbium(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: 
8
[MLXZ]𝘲 class: 
[MX2L6]+
MLXZ class (ENC, equivalent neutral class): 
MX3L5
Summary of calculated classifications: 
Er«V3C8OIIIE27B8Z0X2L6»
𝘥-electron configuration = 𝘮 – VN: 
𝘥-electron configuration = 𝘮 – ON: 
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
Attached atoms: 
Cl2O6
Phase: 
InChIKey (see www.inchi-trust.org): 
YKPPODWJGLGVDI-UHFFFAOYSA-L