1065-95-8

Basic information

• Product Name: OCTAPHENYLCYCLOTETRASILANE
• Synonyms: OCTAPHENYLCYCLOTETRASILANE;octaphenyl-cyclotetrasilan;1,1,2,2,3,3,4,4-octakis(phenyl)-1,2,3,4-tetrasiletane;1,1,2,2,3,3,4,4-octakis(phenyl)tetrasiletane
• CAS NO: 1065-95-8
• Molecular Formula: C₄₈H₄₀Si₄
• Molecular Weight: 729.17
• EINECS: 213-905-2
• Mol File: 1065-95-8.mol
• Article Data: 2

Chemical Properties

• Melting Point: 320 °C (dec.)(lit.)
• Appearance: /
• Density: 1.16 g/cm³
• Refractive Index: 1.666
• CAS DataBase Reference: OCTAPHENYLCYCLOTETRASILANE(CAS DataBase Reference)
• NIST Chemistry Reference: OCTAPHENYLCYCLOTETRASILANE(1065-95-8)
• EPA Substance Registry System: OCTAPHENYLCYCLOTETRASILANE(1065-95-8)

Safety Data

• WGK Germany: 3
• Hazardous Substances Data: 1065-95-8(Hazardous Substances Data)

Usage

General Description

OCTAPHENYLCYCLOTETRASILANE is a chemical compound with the molecular formula C40H32Si4. It is a type of organosilicon compound that consists of a silicon atom bound to four phenyl groups, arranged in a cyclic tetramer structure. OCTAPHENYLCYCLOTETRASILANE has various industrial applications, particularly in the electronics industry, where it is used as a precursor in the production of silicon-based materials such as silicones and silicon carbide. OCTAPHENYLCYCLOTETRASILANE is also used in material science research and as a building block in the synthesis of other organosilicon compounds.

InChI:InChI=1/C48H40Si4/c1-9-25-41(26-10-1)49(42-27-11-2-12-28-42)50(43-29-13-3-14-30-43,44-31-15-4-16-32-44)52(47-37-21-7-22-38-47,48-39-23-8-24-40-48)51(49,45-33-17-5-18-34-45)46-35-19-6-20-36-46/h1-40H

Upstream product

• 80-10-4 diphenylsilyl dichloride 
• 108-88-3 toluene 
• 1450-23-3 hexaphenyldisilane 
• 18557-45-4 chloro-phenoxy-diphenyl-silane 

Downstream Products

• 199800-04-9 (C₆H₅)8Si₄O₂ 
• 73023-80-0 octachlorocyclotetrasilane 
• 4158-64-9 1,1,1,3,3,3-hexaphenyl-disilazane 
• 4098-24-2 decaphenyl-tetrasilane 
• 120574-99-4 1,2,3,4-tetramethyl-1,2,3,4-tetraphenylcyclotetrasilane 
• 120575-74-8 1,2,3,4-tetramethyl-1,2,3,4-tetraphenylcyclotetrasilane 
• 120575-00-0 1,2,3,4-tetramethyl-1,2,3,4-tetraphenylcyclotetrasilane 
• 13498-31-2 1,4-dichlorooctaphenyltetrasilane 
• 789-25-3 HSiPh₃ 
• 546-56-5 octaphenylcyclotetrasiloxane 
• 1048-08-4 tetraphenylsilane 
• 791-31-1 triphenylhydroxysilane 

Related news

Some dichloro compounds derived from OCTAPHENYLCYCLOTETRASILANE (cas 1065-95-8) and decaphenylcyclopentasilane07/24/2019

A study of the preparation of α,ω-dichloropolydiphenylsilanes from octaphenylcyclotetrasilane (I) and decaphenylcyclopentasilane (II) with chlorinating reagents such as 1,1,2,2-tetrachloroethane, phosphorus pentachloride and chlorine is discussed. The study has led to the preparation of compou...detailed

Relevant articles and documents

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Thermal Synthesis of Perchlorinated Oligosilanes: A Fresh Look at an Old Reaction

A combined experimental and theoretical study of the high-temperature reaction of SiCl4 and elemental silicon is presented. The nature and reactivity of the product formed upon rapid cooling of the gaseous reaction mixture is investigated by comparison with the defined model compounds cyclo-Si5Cl10, n-Si5Cl12 and n-Si4Cl10. A DFT assessment provides mechanistic insight into the oligosilane formation. Experimental 29Si NMR investigations, supported by quantum-chemical 29Si NMR calculations, consistently show that the reaction product is composed of discrete molecular perchlorinated oligosilanes. Low-temperature chlorination is an unexpectedly selective means for the transformation of cyclosilanes to acyclic species by endocyclic Si?Si bond cleavage, and we provide a mechanistic rationalization for this observation. In contrast to the raw material, the product obtained after low-temperature chlorination represents an efficient source of neo-Si5Cl12 or the amine-stabilized disilene EtMe2N?SiCl2Si(SiCl3)2 through reaction with aliphatic amines.