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Partially condensed structural formula of tris(tert-butoxy)silanethiol Tri(tert-butoxy)silanethiol.svg
Partially condensed structural formula of tris(tert-butoxy)silanethiol
Ball and stick model of tris(tert-butoxy)silanethiol Tri(tert-butoxy)silanethiol.png
Ball and stick model of tris(tert-butoxy)silanethiol
Preferred IUPAC name
Other names
3D model (JSmol)
PubChem CID
  • InChI=1S/C12H28O3SSi/c1-10(2,3)13-17(16,14-11(4,5)6)15-12(7,8)9/h16H,1-9H3
  • CC(C)(C)O[Si](S)(OC(C)(C)C)OC(C)(C)C
Molar mass 280.50 g·mol−1
AppearanceColourless liquid
Boiling point 113 to 115 °C (235 to 239 °F; 386 to 388 K)at 35 mmHg
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tris(tert-butoxy)silanethiol is a silicon compound containing three tert-butoxy groups and a rare Si–S–H functional group. This colourless compound serves as an hydrogen donor in radical chain reactions. It was first prepared by alcoholysis of silicon disulfide and purified by distillation: [1]

3 (CH3)3COH + SiS2 → [(CH3)3CO]3SiSH + H2S

Since 1962 it was thoroughly studied including its acid-base properties [2] [3] and coordination chemistry with metal ions. It coordinates to metal ions via the sulfur and oxygen donor atoms. [4] [5] [6] [7] [8] [9]

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