Antimony(III) acetate is the compound of
antimony with the
chemical formula of Sb(CH
3CO
2)
3. It is a white powder, is moderately water-soluble, and is used as a
catalyst in the production of
polyester
Polyester is a category of polymers that contain the ester functional group in every repeat unit of their main chain. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). Polyesters include natural ...
s.
Preparation
It can be prepared by the reaction of
antimony(III) oxide
Antimony(III) oxide is the inorganic compound with the formula Sb2O3. It is the most important commercial compound of antimony. It is found in nature as the minerals valentinite and senarmontite. Like most polymeric oxides, Sb2O3 dissolves i ...
with
acetic anhydride
Acetic anhydride, or ethanoic anhydride, is the chemical compound with the formula (CH3CO)2O. Commonly abbreviated Ac2O, it is the simplest isolable anhydride of a carboxylic acid and is widely used as a reagent in organic synthesis. It is a col ...
:
:Sb
2O
3 + 3 C
4H
6O
3 → 2 Sb(CH
3CO
2)
3
Structure
The crystal structure of antimony(III) acetate has been determined by
X-ray crystallography. It consists of discrete Sb(OAc)
3 monomers with monodentate
acetate
An acetate is a salt (chemistry), salt formed by the combination of acetic acid with a base (e.g. Alkali metal, alkaline, Alkaline earth metal, earthy, Transition metal, metallic, nonmetallic or radical Radical (chemistry), base). "Acetate" als ...
ligands. The monomers are linked together into chains by weaker C=O···Sb
intermolecular interaction
An intermolecular force (IMF) (or secondary force) is the force that mediates interaction between molecules, including the electromagnetic forces of attraction
or repulsion which act between atoms and other types of neighbouring particles, e.g. a ...
s.
References
{{Acetates
Antimony(III) compounds
Acetates