754-75-6

Basic information

• Product Name: Tetrasilane, 1,4-dichloro-1,1,2,2,3,3,4,4-octamethyl-
• Synonyms: dichlorooligosilane;1,4-Dichlor-octamethyl-tetrasilan;1,4-dichloropermethyltetrasilane;Tetrasilane,1,4-dichloro-1,1,2,2,3,3,4,4-octamethyl;1,4-dichlorooctamethyltetrasilane;1,4-dichloro-1,1,2,2,3,3,4,4-octamethyltetrasilane
• CAS NO: 754-75-6
• Molecular Formula: C8H24Cl2Si4
• Molecular Weight: 303.527
• Mol File: 754-75-6.mol
• Article Data: 9

Chemical Properties

• Boiling Point: 98 °C(Press: 5 Torr)
• Density: 0.930±0.06 g/cm3(Predicted)
• CAS DataBase Reference: Tetrasilane, 1,4-dichloro-1,1,2,2,3,3,4,4-octamethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Tetrasilane, 1,4-dichloro-1,1,2,2,3,3,4,4-octamethyl-(754-75-6)
• EPA Substance Registry System: Tetrasilane, 1,4-dichloro-1,1,2,2,3,3,4,4-octamethyl-(754-75-6)

Safety Data

• Hazardous Substances Data: 754-75-6(Hazardous Substances Data)

Upstream product

• 75-78-5 dimethylsilicon dichloride 
• 4098-30-0 dodecamethylcyclohexasilane 
• 4342-61-4 1,2-dichlorotetramethylsilane 

Downstream Products

• 10536-58-0 1.4-Bis--octamethyltetrasilan 
• 170703-76-1 1,5-Bis-(dimethyl-phenyl-silanyl)-2,2,3,3,4,4,6,6-octamethyl-2,3,4,6-tetrasila-bicyclo[3.1.0]hexane 
• 1379575-54-8 1,4-bis(4-(methylthio)phenyl)octamethyltetrasilane 
• 906340-23-6 FpSiMe2SiMe2SiMe2SiMe2Cl 
• 223565-72-8 H(C₆H₅)2Sn(Si(CH₃)2)4Sn(C₆H₅)2H 
• 210362-77-9 bis(triphenylstannyl)octamethyltetrasilane 
• 1064-10-4 hexaphenylditin 
• 174904-57-5 1-chloro-3-(η(5)-methylcyclopentadienyltricarbonyltungsten)octamethyltetrasilane 
• 926906-86-7 1-(4-bromophenyl)-4-(4-formylphenyl)-1,1,2,2,3,3,4,4-octamethyltetrasilane 
• 195526-33-1 1,4-bis(4-bromophenyl)-1,1,2,2,3,3,4,4-octamethyltetrasilane 
• 170703-63-6 1,4-bis(dimethylphenylsilyldiazomethyl)-1,1,2,2,3,3,4,4-octamethyltetrasilane 
• 83272-65-5 2,3,4,5-Tetrakis(dimethyl)sulfocyclopentasilan 
• 75877-14-4 1,2,2,3,3,4,4,5,5-Nonamethyl-[1,2,3,4,5]phosphatetrasilolane 

Relevant articles and documents

DISILANE-, CARBODISILANE-AND OLIGOSILANE CLEAVAGE WITH CLEAVAGE COMPOUND ACTING AS CATALYST AND HYDROGENATION SOURCE

The invention relates to a process for the manufacture of monosilanes of formula (I): MexSiHyClz (I), comprising: the step of subjecting a silane substrate (methyldisilanes, methyloligosilanes, or carbodisilanes) to a cleavage reaction of the silicon-silicon bond(s) or the silicon- carbon bonds in silane substrates the reaction involving a cleavage compound selected from a quaternary Group 15 onium compound R4 QX, a heterocyclic amine, a heterocyclic ammonium halide, or a mixture of R3P and RX. The starting material disilanes to be cleaved has the formula (II): MemSi2HnClo (II) The starting material oligosilanes to be cleaved have the general formula (III): MepSiqHrCIs (II I), The starting material carbodisilanes to be cleaved have the general formula (IV): (MeaSiHbCle)-CH2-(MecSiHdClf) (IV)

Synthesis of dichloro derivatives of linear and cyclic permethyloligosilanes and cyclolinear permethylpolysilane-siloxanes and permethylpolyoxysilane based on them

The reactions of dodecamethylcyclohexasilane with chlorides of I, II, IV-VI, and VIII Group metals were studied as a promising approach to the synthesis of functional oligosilanes. When cyclohexasilane reacts with metal chlorides without a solvent at elevated temperatures, the process is intensified and, in some cases, the selectivity of formation of chloro derivatives of linear and cyclic permethyloligosilanes increases. The cyclolinear permethylpolysilane-siloxanes were prepared by heterofunctional polycondensation of the resulting oligosilanes with bifunctional cyclic and linear permethyloligosiloxanes. Cyclolinear permethylpolyoxysilane was synthesized for the first time by the reaction of 1,3-dihydroxycyclo-hexasilane with 1,3-dichlorohexamethyltrisilane.

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.