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638102

Sigma-Aldrich

4,4′-Bis(triethoxysilyl)-1,1′-Biphenyl

≥90% (VPCC)

Synonym(e):

4,4′-Bis(triethoxysilyl)biphenyl

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About This Item

Lineare Formel:
[-C6H4Si(OC2H5)3]2
CAS-Nummer:
123640-93-7
Molekulargewicht:
478.73
MDL-Nummer:
MFCD06798075
UNSPSC-Code:
12352103
PubChem Substanz-ID:
24882911
NACRES:
NA.22

Assay

≥90% (VPCC)

bp

203-206 °C/0.3 mmHg (lit.)

Dichte

1.047 g/mL at 25 °C (lit.)

SMILES String

CCO[Si](OCC)(OCC)c1ccc(cc1)-c2ccc(cc2)[Si](OCC)(OCC)OCC

InChI

1S/C24H38O6Si2/c1-7-25-31(26-8-2,27-9-3)23-17-13-21(14-18-23)22-15-19-24(20-16-22)32(28-10-4,29-11-5)30-12-6/h13-20H,7-12H2,1-6H3

InChIKey

KENDGHJJHKCUNB-UHFFFAOYSA-N

Anwendung

A silicon-based nucleophile shown to be reactive in Pd-catalyzed cross-coupling reactions.
4,4′-Bis(triethoxysilyl)-1,1′-biphenyl (BTESB) can be used as an indicator to determine the chirality of helical silica nanotubes.

BTESB can also be utilized as a precursor to prepare:
  • Helical 4, 4′-biphenylene-silica nanotubes and nanoribbons using 3-aminopropyltrimethoxysilane as a co-structure-directing agent.
  • Biphenyl-bridged alkoxysilane-based crosslinked polyalkoxysilane by condensation with linear aliphatic diols.
  • Biphenylene-bridged silsesquioxane thin films by the sol-gel method.

H-Sätze

H413

Gefahreneinstufungen

Aquatic Chronic 4

Lagerklassenschlüssel

10 - Combustible liquids

WGK

WGK 3

Flammpunkt (°F)

>230.0 °F - closed cup

Flammpunkt (°C)

> 110 °C - closed cup

Persönliche Schutzausrüstung

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)

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Die Dokumentenbibliothek aufrufen

A chirality indicator for the walls and the surfaces of silica nanotubes
Hou F-W, et al.
Chinese Chemical Letters = Zhongguo Hua Xue Kuai Bao, 24(8), 770-772 (2013)
Chimie douce route to novel acoustic waveguides based on biphenylene-bridged silsesquioxanes
Masse P, et al.
Journal of Materials Chemistry, 21(38), 14581-14586 (2011)
Lorenzo Abate et al.
Polymers, 11(9) (2019-09-12)
Two series of novel dumbbell-shaped polyhedral oligomeric silsesquioxanes (POSSs), fully functionalized with phenyl groups at the corner of the silicon cages, were used to prepare polystyrene (PS) nanocomposites through the method of in situ polymerization. The percentage of the molecular
Yi Li et al.
Nanotechnology, 22(13), 135605-135605 (2011-02-24)
An anionic gelator, D-C12ValC10COONa, derived from D-valine can cause physical gels in water and organic solvents. Helical 4,4(')-biphenylene-silica nanotubes and nanoribbons were prepared using it with 3-aminopropyltrimethoxysilane as a co-structure-directing agent and 4,4(')-bis(triethoxysilyl)-1,1(')-biphenyl (BTESB) as precursor. It was found that
Denmark, S. E.; Ober, M. H.
Aldrichimica Acta, 36, 75-75 (2003)

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