Trichlorostannate

Trichlorostannate is the inorganic anion with the formula SnCl−3. It is the chloride adduct of stannous chloride:

SnCl₂ + Cl⁻ → SnCl−3

Trichlorostannate

Identifiers
CAS Number	15529-74-5
3D model (JSmol)	Interactive image
InChI InChI=1S/3Cl.Sn/q3*-1;+2 Key: ZFLSFAQFLJXSOW-UHFFFAOYSA-N
SMILES [Cl-][Sn+2]([Cl-])[Cl-]
Properties
Chemical formula	SnCl3−
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

The trichlorostannate anion is pyramidal in shape, being similar to trichlorogermanate (GeCl−3) and antimony trichloride.

The anion can be isolated as quaternary ammonium salt and cesium salts.^[1] The compound with the formula K₂SnCl₄·H₂O is a hydrated double salt, consisting of SnCl−3 and Cl⁻.^[2]

[Pt(SnCl₃)₅]^3-. Color code: green = Cl, gray = Sn, blue = Pt.

Trichlorostannate serves as a ligand in coordination chemistry, illustrated by the complex [Pt(SnCl₃)₅]³⁻.^[3]