[Sn(SiBuᵗ₂Me)₂]₂

Formula Unicode styled: 
[Sn(SiBuᵗ₂Me)₂]₂
Compound name(s): 
tetrakis(di-t-butyl(methyl)silyl)-distannene
Central atom: 
Tin
Charge on formula unit (QN): 
0
Attached groups: 
SiBuᵗ₂Me (di-t-butyl-methyl-silyl)
Compound type: 
Molecular
Notes: 

"one should explain the formation of the Sn=Sn double bond as a result of the out-of-plane (rather than in-plane) interaction of the two triplet stannylenes, resulting in the formation of the highly twisted but not bent Sn=Sn bond." This takes the VN to 4 and retains the ON of +2, Sn(II).

DOI link to literature report: 
10.1021/ja040152k
Crystal data CSD link: 
hahxeu
Crystal data ICSD link: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (II)
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Bond number (BN) = 𝘹 + 𝘭 + 𝘻: 
4
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4
Summary of calculated classifications: 
Sn«V4C3OIIE8B4Z0L0X4»
Geometry: 
3-coordinate: trigonal plane (TP-3)
𝘥-electron configuration = 𝘮 – VN: 
𝘥-electron configuration = 𝘮 – ON: 
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
Attached atoms: 
Si2Sn1
Phase: 
Solid
InChIKey (see www.inchi-trust.org): 
IIAAWDCYJLCHGF-UHFFFAOYSA-N