[P(NPrⁱ₂)(NPrⁱ₂)]⊕

Formula Unicode styled: 
[P(NPrⁱ₂)(NPrⁱ₂)]⊕
Compound name(s): 
bis(di-isopropylamino)phosphenium
bis(di-isopropylamino)phosphorus(1+)
Central atom: 
Phosphorus
Charge on formula unit (QN): 
1+
Attached groups: 
NPrⁱ₂ (diisopropylamino)
NPrⁱ₂ (diisopropylamino: planar)
Compound type: 
Molecular
Notes: 

Both groups planar but the A2 combination of the two out-of-plane N 2p orbitals is non-bonding with respect to phosphorus reducing the electron count to 8.

DOI link to literature report: 
10.1021/ic00085a036
Crystal data CSD link: 
kuwmoe10
Crystal data ICSD link: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Bond number (BN) = 𝘹 + 𝘭 + 𝘻: 
3
[MLXZ]𝘲 class: 
[MX2L1]+
MLXZ class (ENC, equivalent neutral class): 
MX3
Summary of calculated classifications: 
P«V3C2OIIIE8B3Z0X2L1»⊕
Geometry: 
3-coordinate: trigonal planar (p-block element, 1 lone pair)
𝘥-electron configuration = 𝘮 – VN: 
𝘥-electron configuration = 𝘮 – ON: 
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
Attached atoms: 
N2
Phase: 
Solid
InChIKey (see www.inchi-trust.org): 
10.1021/ic00085a036