15-crown-5 (15-crown-5-κ⁴O)

[Al₄(Me)₁₂(15-crown-5-κ⁴O)]

Formula Unicode styled: 
[Al₄(Me)₁₂(15-crown-5-κ⁴O)]
Compound name(s): 
(15-Crown-5)-tetrakis(trimethyl-aluminium)
Central atom: 
Aluminium
Attached groups: 
Me (methyl)
15-crown-5 (15-crown-5-κ⁴O)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Al«V3C4OIIIE8B4Z0X3L1»
[MLXZ]𝘲 class: 
[MX3L1]
MLXZ class (ENC, equivalent neutral class): 
MX3L1

trans–[Cu(Cl)(NCMe)(15-crown-5-κ⁴O)]⊕

Formula Unicode styled: 
trans–[Cu(Cl)(NCMe)(15-crown-5-κ⁴O)]⊕
Compound name(s): 
Acetonitrile-chloro-(15-crown-5)-copper(1+)
Central atom: 
Copper
Attached groups: 
Cl (chloro)
NCMe (acetonitrile)
15-crown-5 (15-crown-5-κ⁴O)
Charge on central atom: 
1
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (II)
Coordination Number (CN, sum of attached group denticities): 
CN: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 21
Summary of calculated classifications: 
Cu«V2C6OIIE21B6Z0X1L5»⊕
[MLXZ]𝘲 class: 
[MX1L5]+
MLXZ class (ENC, equivalent neutral class): 
MX2L4