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Title: 1,4,7-Trithiacyclononane  
Author: World Heritage Encyclopedia
Language: English
Subject: Trispyrazolylborate, Denticity
Publisher: World Heritage Encyclopedia


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CAS number 6573-11-1 YesY
PubChem 373835
ChemSpider 331656 YesY
ChEBI CHEBI:37418 YesY
Jmol-3D images Image 2
Molecular formula C6H12S3
Molar mass 180.35 g/mol
Appearance Colourless solid
Melting point

78 - 81 °C

Boiling point


Solubility in water Insoluble
Solubility Chlorocarbons, acetone
R-phrases R36/37/38
S-phrases S26, S36
Main hazards Toxic (T)
Related compounds
Related compounds Thiirane, 1,3,5-Trithiane, Triazacylononane
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

1,4,7-Trithiacyclononane, also called 9-ane-S3, is the heterocyclic compound with the formula (CH2CH2S)3. This cyclic thioether is most often encountered as a tridentate ligand in coordination chemistry.

9-ane-S3 forms complexes with many metal ions, including those considered hard, such as copper(II) and iron(II).[1] Most of its complexes have the formula [M(9-ane-S3)2]2+ and are octahedral.


This compound was first reported in 1977,[2] and the current synthesis entails the assembly within the coordination sphere of a metal ion followed by decomplexation:[3]


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