23657-43-4

Basic information

• Product Name: Cyclooctasilane, hexadecamethyl-
• CAS NO: 23657-43-4
• Molecular Formula: C16H48Si8
• Molecular Weight: 465.241
• Mol File: 23657-43-4.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Cyclooctasilane, hexadecamethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Cyclooctasilane, hexadecamethyl-(23657-43-4)
• EPA Substance Registry System: Cyclooctasilane, hexadecamethyl-(23657-43-4)

Safety Data

• Hazardous Substances Data: 23657-43-4(Hazardous Substances Data)

Upstream product

• 75-78-5 dimethylsilicon dichloride 

Relevant articles and documents

Synthesis of α,ω-dihalopermethyloligosilanes and silane-siloxane copolymers

α,ω-Dibromopermethyloligosilanes, Br(SiMe2)nBr (n = 2-4, 6), were prepared by the reaction of dodecamethylcyclohexasilane with bromine. The reaction of (Me2Si)6 with MCl4 (M = Sn, Ti) proceeds with the cleavage of Si-Si-and Si-C-bonds with the formation of α,ω-dichloropermethyloligosilanes, Cl(SiMe2)nCI (n = 2-4, 6), and chloro derivatives of cyclohexasilane, ClmSi6Me12-m (m = 1, 2). Silane-siloxane copolymers of regular structure were obtained by heterofunctional copolycondensation of α,ω-dihalopermethyloligosilanes with 1,5-dihydroxyhexamethyltrisiloxane.