674298-98-7

Basic information

• Product Name: tetrakis(dimethylsiloxy)octaphenylsilsesquioxane
• Synonyms: tetrakis(dimethylsiloxy)octaphenylsilsesquioxane
• CAS NO: 674298-98-7
• Molecular Weight: 1302.17
• Mol File: 674298-98-7.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: tetrakis(dimethylsiloxy)octaphenylsilsesquioxane(CAS DataBase Reference)
• NIST Chemistry Reference: tetrakis(dimethylsiloxy)octaphenylsilsesquioxane(674298-98-7)
• EPA Substance Registry System: tetrakis(dimethylsiloxy)octaphenylsilsesquioxane(674298-98-7)

Safety Data

• Hazardous Substances Data: 674298-98-7(Hazardous Substances Data)

Upstream product

• 1066-35-9 dimethylmonochlorosilane 
• 779321-27-6 3,9,14,17-tetrahydroxy-1,3,5,7,9,11,14,16-octaphenyltricyclo[7.3.3^7,10]octasilsesquioxane 
• 15933-59-2 1,1,3,3-tetramethyldisilazane 
• 18163-05-8 methallyl-dimethyl-silane 

Relevant articles and documents

Tetra-functional double-decker silsesquioxanes as anchors for reactive functional groups and potential synthons for hybrid materials

A series of double-decker silsesquioxane derivatives with four reactive functional groups were designed, efficiently synthesized, and characterized. These novel inorganic-organic hybrids show highly attractive features for applications as building blocks

Highly Efficient Catalytic Route for the Synthesis of Functionalized Silsesquioxanes

Silsesquioxanes (POSS) have recently become the subject of growing interest in many branches of materials chemistry. Despite this great interest, no direct metal-catalyzed method to cap the corner of the POSS molecules has yet been proposed. In this report, we present a highly efficient method for the synthesis of functionalized silsesquioxanes mediated by scandium(III) triflate, which opens up the possibility of introducing a wide variety of functional groups into this class of organosilicon compounds under mild conditions with excellent yields. We also investigated the differences in the activity of the Lewis acid (Sc(OTf)3) and the hidden Br?nsted acid (TfOH) generated in situ from triflates as catalysts in the functionalization of silsesquioxanes. What is more, this solution provides an efficient corner-capping reaction and other functionalizations to obtain silsesquioxane derivatives which are often not possible to synthesize with good yields, efficiency, and chemoselectivity using conventional methods.

Silsesquioxane derivative and process for producing the same

The PSQ silsesquioxane derivative of the invention is represented by Formula (1), and it may be utilized as additives to ordinary organic polymers for improving the flame retardancy, heat resistance, weather resistance, light resistance, electric insulati