1292785-44-4

Basic information

• Product Name: Si(CH₃)2(C₂HSi(CH₃)3)(CSi(CH₃)3)CB(C₆F₅)2
• CAS NO: 1292785-44-4
• Molecular Weight: 598.514
• Mol File: 1292785-44-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Si(CH₃)2(C₂HSi(CH₃)3)(CSi(CH₃)3)CB(C₆F₅)2(CAS DataBase Reference)
• NIST Chemistry Reference: Si(CH₃)2(C₂HSi(CH₃)3)(CSi(CH₃)3)CB(C₆F₅)2(1292785-44-4)
• EPA Substance Registry System: Si(CH₃)2(C₂HSi(CH₃)3)(CSi(CH₃)3)CB(C₆F₅)2(1292785-44-4)

Safety Data

• Hazardous Substances Data: 1292785-44-4(Hazardous Substances Data)

Upstream product

• 25284-31-5 bis((trimethylsilyl)ethynyl)diphenylsilane 
• 30262-84-1 Dimethylbis<(trimethylsilyl)ethinyl>silan 
• 165612-94-2 bis(pentafluorophenyl)borohydride 

Downstream Products

• 1228942-31-1 1,1-dimethyl-2,5-bis(trimethylsilyl)-3-bis(pentafluoropheyl)borylsilane 
• 30262-84-1 Dimethylbis<(trimethylsilyl)ethinyl>silan 

Relevant articles and documents

Reactions of bis(alkynyl)silanes with HB(C6F5) 2: Formation of boryl-substituted silacyclobutene derivatives

Treatment of R2Si(CC-SiMe3)2 [1a (Me), 1b (Ph)] with HB(C6F5)2 at low temperature (253 K (a), 273 K (b)) gives the -B(C6F5)2 substituted silacyclobutene products (4a,b) under kinetic control. Upon warming to room temperature they disappear to form the thermodynamically favoured isomeric silole derivatives (2a,b). Similar treatment of Me2Si(CC-R 1)2 [5a (R1 = Ph), 5b (R1 = tert-butyl) with HB(C6F5)2 at room temperature gave the stable -B(C6F5)2 substituted silacyclobutene derivatives 6 and 7, respectively. Subsequent photolysis resulted in a Z- to E-isomerization of the substituted exocyclic CC double bonds in these products. The silacyclobutene derivative E-6 was characterized by an X-ray crystal structure analysis.