668987-58-4

Basic information

• Product Name: 1,2-bis(1'-phenyl-o-carboranyl)-1,1,2,2-tetramethyl-1,2-disilane
• Synonyms: 1,2-bis(1'-phenyl-o-carboranyl)-1,1,2,2-tetramethyl-1,2-disilane
• CAS NO: 668987-58-4
• Molecular Weight: 554.944
• Mol File: 668987-58-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,2-bis(1'-phenyl-o-carboranyl)-1,1,2,2-tetramethyl-1,2-disilane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-bis(1'-phenyl-o-carboranyl)-1,1,2,2-tetramethyl-1,2-disilane(668987-58-4)
• EPA Substance Registry System: 1,2-bis(1'-phenyl-o-carboranyl)-1,1,2,2-tetramethyl-1,2-disilane(668987-58-4)

Safety Data

• Hazardous Substances Data: 668987-58-4(Hazardous Substances Data)

Upstream product

• 16390-61-7 1-phenyl-1,2-closo-C₂B₁₀H₁₁ 
• 4342-61-4 1,2-dichlorotetramethylsilane 

Relevant articles and documents

Unusual reactivities of linear disilanes with o-carboranyl unit

The linear disilanes l,2-bis(1′-R-o-carboranyl)-1,1,2,2-tetramethyl-1,2-disilane (R = H (2a), Me (2b), Ph (2c)) were prepared by reacting the lithium salt of 1-R-o-carborane (1) with 1,2-dichlorotetramethyldisilane. These linear disilanes (2) were found to be useful precursors for the synthesis of a variety of cyclic compounds. For instance, reaction of the linear dilithiodisilane 2a with 1,2-dichlorotetramethyldisilane afforded the four-membered cyclic compound 3,4-o-carboranylene-1,1,2,2-tetramethyl-1,2-disilacyclobutane (3). Further, whereas the reaction of linear disilane (2a) with Pt(PEt3)3 was found to yield the cyclic bis(silyl)platinum complex 4, the reaction of the methyl-o-carboranyl-substituted disilane 2b with Pt(PEt3)3 under the same conditions yielded the decomposed bis(silyl)platinum complex 5, formed via oxidative addition of a Si-Si bond at the platinum atom. The reaction of the cyclic disilane 3 using a catalytic amount of lithium metal afforded a five-membered cyclic trisilyl compound (6). The reaction of 6 with phenylacetylene in the presence of a catalytic amount of Pd(CNBut)2 was found to yield the seven-membered trisilyl ring compound 6,7-o-carboranylene-1,1,4,4,5,5-hexamethyl-2-phenyl-l,4,5-trisilacyclohept-2-ene (7). The structures of compounds 2a,b, 4-6, and 7 were determined using single-crystal X-ray crystallography.