[W(OBuᵗ)₂(NO)(Cp*)]

Formula Unicode styled: 
[W(OBuᵗ)₂(NO)(Cp*)]
Compound name(s): 
bis(t-Butoxy)-(η-pentamethyl-cyclopentadienyl)-nitroso-tungsten
Central atom: 
Charge on formula unit (QN): 
0
Compound type: 
Notes: 

Donation of π-electron density from the oxygen atoms of the two OBuᵗ groups is achieved as the oxygen p-orbitals are aligned with a metal π orbital that is not interacting significantly with the nitrosyl ligand. This is achieved as the two OBuᵗ groups interact as a X₂L set with the metal, bringing the electron number, EN, to 18. See, for instance:

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: 
9
[MLXZ]𝘲 class: 
[MX4L4Z1]
MLXZ class (ENC, equivalent neutral class): 
MX6L3
Summary of calculated classifications: 
W«V6C6OIIE18B9X4L4Z1»
𝘥-electron configuration = 𝘮 – VN: 
d0
𝘥-electron configuration = 𝘮 – ON: 
d4
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
d0
Attached atoms: 
C5N1O2
Phase: 
InChIKey (see www.inchi-trust.org): 
FVBWKGIYGKDERO-UHFFFAOYSA-N