Antimony(III) acetate

Antimony(III) acetate

Names
IUPAC name Antimony(III) acetate
Other names Antimony triacetate Acetic acid, antimony(3+) salt
Identifiers
CAS Number	6923-52-0 Y
3D model (Jmol)	Interactive image Interactive image
ChemSpider	21839 Y
ECHA InfoCard	100.027.312
PubChem	16685080
RTECS number	AF4200000
InChI InChI=1S/3C2H4O2.Sb/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3 Y Key: JVLRYPRBKSMEBF-UHFFFAOYSA-K Y InChI=1/3C2H4O2.Sb.3H/c3*1-2(3)4;;;;/h3*1H3,(H,3,4);;;;/q;;;+3;;;/p-3/r3C2H4O2.H3Sb/c3*1-2(3)4;/h3*1H3,(H,3,4);1H3/q;;;+3/p-3 Key: NSMVVPJZMRQLMR-ZHOQVWKLAW InChI=1/3C2H4O2.Sb/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3 Key: JVLRYPRBKSMEBF-DFZHHIFOAU
SMILES CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[SbH3+3] CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Sb+3]
Properties
Chemical formula	Sb(CH3COO)3
Appearance	White powder
Density	1.22 g/cm³ (20 °C)
Melting point	128.5 °C (263.3 °F; 401.6 K) (decomposes to Sb2O3)
Hazards
NFPA 704	0 1 0
Lethal dose or concentration (LD, LC):
LD50 (median dose)	4480 mg/kg (rat)
US health exposure limits (NIOSH):
PEL (Permissible)	TWA 0.5 mg/m3 (as Sb)[1]
REL (Recommended)	TWA 0.5 mg/m3 (as Sb)[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Antimony(III) acetate is the compound of antimony with the chemical formula of Sb(CH₃CO₂)₃. It is a white powder, is moderately water-soluble, and is used as a catalyst in the production of polyesters.

Preparation

It can be prepared by the reaction of antimony(III) oxide with acetic acid:

Sb₂O₃ + 6 CH₃CO₂H → 2 Sb(CH₃CO₂)₃ + 3 H₂O

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 ligands. The monomers are linked together into chains by weaker C=O···Sb intermolecular interactions.^[2]

References