872-46-8

Basic information

• Product Name: 1,1-Dichloro-1-silacyclo-3-pentene
• Synonyms: 1,1-Dichloro-1-silacyclo-3-pentene
• CAS NO: 872-46-8
• Molecular Formula: C₄H₆Cl₂Si
• Molecular Weight: 153.0819
• Mol File: 872-46-8.mol

Chemical Properties

• Boiling Point: 153.7°Cat760mmHg
• Flash Point: 40.8°C
• Appearance: /
• Density: 1.19g/cm³
• Vapor Pressure: 4.22mmHg at 25°C
• Refractive Index: 1.487
• CAS DataBase Reference: 1,1-Dichloro-1-silacyclo-3-pentene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1-Dichloro-1-silacyclo-3-pentene(872-46-8)
• EPA Substance Registry System: 1,1-Dichloro-1-silacyclo-3-pentene(872-46-8)

Safety Data

• Hazardous Substances Data: 872-46-8(Hazardous Substances Data)

Usage

Chemical composition

1,1-Dichloro-1-silacyclo-3-pentene is composed of carbon, hydrogen, chlorine, and silicon atoms.

Physical state

It is a liquid at room temperature.

Application

It is primarily used as an intermediate in the production of various organosilicon compounds.

Synthesis

It is also used in the synthesis of silicon-containing polymers and materials.

Safety

It is important to handle this compound with care as it can be toxic and harmful if not used properly.

Precautions

It is important to follow all safety precautions and regulations when handling and storing this chemical.

InChI:InChI=1/C4H6Cl2Si/c5-7(6)3-1-2-4-7/h1-2H,3-4H2

Upstream product

• 74-87-3 methylene chloride 
• 106-99-0 buta-1,3-diene 
• 75-01-4 chloroethylene 
• 2999-78-2 1,1-dichloro-1-silacyclohexa-2,4-diene 

Downstream Products

• 13569-32-9 dichlorosilylene 
• 74-85-1 ethene 
• 10025-78-2 trichlorosilane 
• 106-99-0 buta-1,3-diene 
• 74-86-2 acetylene 
• 1074-29-9 trichlorophenylgermane 
• 1432-32-2 1,1,-dichloro-1-germacyclopent-3-ene 
• 21750-59-4 (2-phenylethyl)trichlorogermane 
• 37862-78-5 1,1-dichloro-3-methylsilacyclopent-3-ene 
• 872-47-9 1,1-dichloro-1-sila-2-cyclopentene 
• 134765-54-1 3,3,6,6-Tetrachloro-3-silabicyclo<3.1.0>hexane 
• 76795-95-4 3-(2-butenylene)-1,1,1,5,5,5-hexamethyltrisiloxane 
• 76795-96-5 3,5-bis(2-butenylene)-1,1,1,7,7,7-hexamethyltetrasiloxane 
• 76795-97-6 3,5,7-tris(2-butenylene)-1,1,1,9,9,9-hexamethylpentasiloxane 

Relevant articles and documents

Intermediacy of surface silylene in the direct synthesis of methylchlorosilanes

The reaction of silicon with methyl chloride was carried out in the presence of butadiene. The products consisted of 1,1-dichlorosila-cyclopent-3-ene, 1-methyl-1-chlorosilacyclopent-3-ene and 1-chlorosilacyclopent-3-ene besides methylchlorosilanes. Silacyclopent-3-enes accounted for 25% of the whole products. The high selectivity for silacyclopent-3-enes indicates that surface silylene is the intermediate in the reaction of silicon with methyl chloride.

Gas-Phase Reactions of Hexachlorodisilane with Vinyl Chloride and Allyl Chloride

Gas-phase reactions of hexachlorodisilane with vinyl chloride and allyl chloride is studied. Dichlorosilylene generated from Si2Cl6 reacts with the above chloroalkenes mainly at the C-Cl bond to form alkenyltrichlorosilanes. The yields of vinyltrichlorosilane and allyltrichlorosilane are 45-63 and 49-81%, respectively. A mechanism of the reactions of Si2Cl6 with vinyl chloride and allyl chloride is proposed.

The role of silylenes in the direct synthesis of methylchlorosilanes

From butadiene trapping experiments in a batch flow reactor, the silylene intermediates SiMeCl and SiCl2 are shown to be formed during the Direct Synthesis.Two types of silylene intermediate are believed to be involved.Silylenoids are formed on the surface where they react with methyl chloride yielding methylchlorosilanes (SiMeCl gives Me2SiCl2, SiCl2 gives MeSiCl3) in accordance with the van den Berg mechanism.Free silylenes are released into the gas phase, where they may be trapped by butadiene, but are not directly involved in methylchlorosilane production.The addition of Me3SiH to the methyl chloride promotes radical reactions; the major product is Me3SiCl.Me3SiCl is believed to result from an efficient chain sequence proceeding mainly on the surface involving Me3Si. radicals which scavenge surface-bound chlorine.