[P(CN)₂]⊖

Formula Unicode styled: 
[P(CN)₂]⊖
Compound name(s): 
dicyanophosphorus(1-)
Central atom: 
Charge on formula unit (QN): 
1–
Attached groups: 
Compound type: 
Notes: 

Interaction of the occupied lone pair (essentially a p-orbital the phosphorus atom with the antibonding σ* orbitals of the CN bonds (back-bonding) amounts to a Z interaction. Similar situation with the As analogue.

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: 
3
[MLXZ]𝘲 class: 
[MX2Z1]-
MLXZ class (ENC, equivalent neutral class): 
MX3
Summary of calculated classifications: 
P«V3C2OIE8B3L0X2Z1»
𝘥-electron configuration = 𝘮 – VN: 
𝘥-electron configuration = 𝘮 – ON: 
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
Attached atoms: 
C2
Phase: 
InChIKey (see www.inchi-trust.org): 
YZJIVJHSSUTGNL-UHFFFAOYSA-N