8-coordinate: square antiprism (SAPR-8)

[Am(I)(O)]

Formula Unicode styled: 
[Am(I)(O)]
Compound name(s): 
Americium oxide iodide
Central atom: 
Americium
Attached groups: 
I (iodo)
O (oxo X₂)
Charge on central atom: 
Compound type: 
Lattice
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 8
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 0
Summary of calculated classifications: 
Am«V3C8OIII»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Li(12-crown-4-κ⁴O)₂]⊕

Formula Unicode styled: 
[Li(12-crown-4-κ⁴O)₂]⊕
Compound name(s): 
bis(12-crown-4-O,O',O'',O''')-lithium(1+)
Central atom: 
Lithium
Attached groups: 
12-crown-4 (12-crown-4-κ⁴O)
Charge on central atom: 
1
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 8
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Li«V1C8OIE16B8Z0X0L8»⊕
[MLXZ]𝘲 class: 
[ML8]+
MLXZ class (ENC, equivalent neutral class): 
MX1L7