Octaphenylsilsesquioxane

Base Information

• Chemical Name: Octaphenylsilsesquioxane
• CAS No.: 5256-79-1
• Deprecated CAS: 77036-59-0
• Molecular Formula: C48H40O12Si8
• Molecular Weight: 1033.52
• Hs Code.: 29319000
• DSSTox Substance ID: DTXSID00893550
• Nikkaji Number: J1.657.056G
• Wikidata: Q72497458
• Mol file: 5256-79-1.mol

Synonyms:Octaphenylsilsesquioxane;5256-79-1;Perphenyloctasilsesquioxane;PSS-Octaphenyl substituted;Octaphenyloctasilsesquioxane;Octaphenyl-T8-silsesquioxane;Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane, octaphenyl-;1,3,5,7,9,11,13,15-octakis-phenyl-2,4,6,8,10,12,14,16,17,18,19,20-dodecaoxa-1,3,5,7,9,11,13,15-octasilapentacyclo[9.5.1.13,9.15,15.17,13]icosane;1,3,5,7,9,11,13,15-Octaphenyl-2,4,6,8,10,12,14,16,17,18,19,20-dodecaoxa-1,3,5,7,9,11,13,15-octasilapentacyclo[9.5.1.13,9.15,15.17,13]icosane;Pentacyclo(9.5.1.13,9.15,15.17,13)octasiloxane, 1,3,5,7,9,11,13,15-octaphenyl-;Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane, 1,3,5,7,9,11,13,15-octaphenyl-;1,3,5,7,9,11,13,15-octaphenyl-2,4,6,8,10,12,14,16,17,18,19,20-dodecaoxa-1,3,5,7,9,11,13,15-octasilapentacyclo[9.5.1.1(3,9).1(5,15).1(7,13)]icosane;Phenyl-POSS;Phenylsilsesquioxane;Ctaphenylsilsesquioxane;Ctaphenylctasilsesquioxane;Octaphenyl Silsesquioxane;Pss-Ctaphenyl Substituted;Octaphenyl-POSS, 98%;Ctaphenyl-T8-Silsesquioxane;Octaphenylsilsesquioxane POSS;Octaphenylhexacyclooctasiloxane;Ctaphenylctasilsesquioxane, 95%;SCHEMBL15400528;DTXSID00893550;MFCD00308870;AKOS015903488;DS-9697;Silsesquioxane, phenyl-, cubical octamer;O0349;I10273;1,3,5,7,9,11,13,15-octaphenylpentacyclo[9.5.1.1(3,9).1(5,15).1(7,13)]octasiloxane;1,3,5,7,9,11,13,15-Octaphenylpentacyclo[9.5.1.1^3,9^.1^5,15^.1^7,13^]octasiloxane

Chemical Property of Octaphenylsilsesquioxane

Chemical Property:

• Vapor Pressure: 418mmHg at 25°C
• Melting Point: >350 ºC
• Refractive Index: 1.61
• Boiling Point: 41.5°Cat760mmHg
• PSA: 110.76000
• Density: 1.35g/cm³
• LogP: 3.02240
• Storage Temp.: Inert atmosphere,Room Temperature
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 12
• Rotatable Bond Count: 8
• Exact Mass: 1032.06738898
• Heavy Atom Count: 68
• Complexity: 1270

Purity/Quality:

99%, ^*data from raw suppliers

Octaphenylsilsequioxane ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Canonical SMILES: C1=CC=C(C=C1)[Si]23O[Si]4(O[Si]5(O[Si](O2)(O[Si]6(O[Si](O3)(O[Si](O4)(O[Si](O5)(O6)C7=CC=CC=C7)C8=CC=CC=C8)C9=CC=CC=C9)C1=CC=CC=C1)C1=CC=CC=C1)C1=CC=CC=C1)C1=CC=CC=C1
• Uses: Octaphenylsilsequioxane (CAS# 5256-79-1) is a polyhedral oligomeric silsesquioxane (POSS). Octaphenylsilsequioxane has been used in the preparation of flame-retardant and radiation-resistant materials.

Technology Process of Octaphenylsilsesquioxane

There total 24 articles about Octaphenylsilsesquioxane which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 95.43%

phenyl trimethylsiloxane (2996-92-1,46143-12-8) → octaphenylsilsesquioxane (5256-79-1)

Guidance literature:

With potassium hydroxide; In water; acetone; at 65 ℃; for 24h;

DOI:10.1002/cjoc.201900170

Reference yield: 95.0%

C24H24O8Si4 (62725-49-9) → octaphenylsilsesquioxane (5256-79-1)

Guidance literature:

With N-benzyl-trimethylammonium hydroxide; In methanol; benzene; at 20 ℃; for 12h; Inert atmosphere;

DOI:10.1016/j.jorganchem.2010.01.013

Reference yield: 81.0%

triethoxyphenylsilane (780-69-8) → octaphenylsilsesquioxane (5256-79-1)

Guidance literature:

With water; sodium hydroxide; In toluene; at 110 ℃; for 72h; Inert atmosphere;

DOI:10.1039/c4ra07242a

upstream raw materials:

Phenyltrichlorosilane

phenyl trimethylsiloxane

phenylsilanetriol

C₂₄H₂₄O₈Si₄

Downstream raw materials:

2,4,6,8,10,12,14,16,17,18,19,20-dodecaoxa-1,3,5,7,9,11,13,15-octasilapentacyclo[9.5.1.1^3,9.1^5,15.1^7,13]icosan-1,3,5,7,9,11,13,15-octanol

4-bromo-phenol

2-hydroxybromobenzene

phenol

Refernces

• 1、 Dare, Enock O.,Liu, Ling-Kang,Peng, James. "Modified procedure for improved synthesis of some octameric silsesquioxanes via hydrolytic polycondenzation in the presence of Amberlite ion-exchange resins". . p. 3668 - 3671. Retrieved 2006.
• 2、 Li, Yuefeng,Cui, Chunming. "Cesium Carbonate-Catalyzed Oxidation of Substituted Phenylsilanes for the Efficient Synthesis of Polyhedral Oligomeric Silsesquioxanes". . p. 13477 - 13485. Retrieved 2018/10/24.
• 3、 Furgal, Joseph C.,Laine, Richard M.. "Nucleophilic attack of R-lithium at tetrahedral silicon in alkoxysilanes. An alternate mechanism". . p. 705 - 725. Retrieved 2016/07/14.