EtC≡CMe (pentyne)

trans,trans,trans–[Nb(I)(CO)₂(EtC≡CMe)(PEt₃)₂]

Formula Unicode styled: 
trans,trans,trans–[Nb(I)(CO)₂(EtC≡CMe)(PEt₃)₂]
Compound name(s): 
Dicarbonyl-iodo-(eta²-pent-2-yne)-bis(triethylphosphine)-niobium
Central atom: 
Niobium
Attached groups: 
I (iodo)
CO (carbonyl)
EtC≡CMe (pentyne)
PEt₃ (triethylphosphane)
Charge on central atom: 
0
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Nb«V1C6OIE16B6Z0X1L5»
[MLXZ]𝘲 class: 
[MX1L5]
MLXZ class (ENC, equivalent neutral class): 
MX1L5