313547-65-8

Basic information

• Product Name: 7-(C₆H₅CH₂CH₂)-arachno-6,8-C₂B₇H₁₂
• Synonyms: 7-(C₆H₅CH₂CH₂)-arachno-6,8-C₂B₇H₁₂
• CAS NO: 313547-65-8
• Molecular Weight: 216.954
• Mol File: 313547-65-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 7-(C₆H₅CH₂CH₂)-arachno-6,8-C₂B₇H₁₂(CAS DataBase Reference)
• NIST Chemistry Reference: 7-(C₆H₅CH₂CH₂)-arachno-6,8-C₂B₇H₁₂(313547-65-8)
• EPA Substance Registry System: 7-(C₆H₅CH₂CH₂)-arachno-6,8-C₂B₇H₁₂(313547-65-8)

Safety Data

• Hazardous Substances Data: 313547-65-8(Hazardous Substances Data)

Upstream product

• 100-42-5 styrene 
• 17653-38-2 C₂B₇H₁₃ 

Relevant articles and documents

Transition-metal-promoted reactions of boron hydrides. 16. Platinum- and palladium-catalyzed olefin addition and olefin dehydrogenative borylation reactions of arachno-6,8-C2B7H13: Syntheses and structural characterizations of 7-R-arachno-6,8-C2B7H12 and 7-(trans-R-CH=CH)-arachno-6,8-C2B7H12

The chloroplatinic acid or platinum(II) bromide-catalyzed reaction of arachno-6,8-C2B7H13 with ethylene results in hydroboration to yield the single product 7-(C2H5)-arachno-6,8-C2B7H 12. Analogous reactions with 1-pentene or styrene yield a mixture of both hydroboration, 7-R-arachno-6,S-C2B7H12, and dehydrogenative borylation, 7-(trans-R-CH=CH)-arachno-6,8-C2B7H12, products. On the other hand, the palladium(II) bromide-catalyzed reaction of arachno-6,8-C2B7H13 with ethylene yields predominantly the dehydrogenative borylation product (7-(CH2=CH)-arachno-6,8-C2B7H12 along with smaller amounts of 7-(C2H5)-arachno-6,8-C2B7H 12. Palladium(II) bromide-catalyzed reactions with 1-pentene or styrene result in only dehydrogenative borylation to produce 7-(trans-R-CH=CH)-arachno-6,8-C2B7H12. The hydroboration and dehydrogenative borylation products observed in the platinum- and palladium-catalyzed reactions are related to those that have been observed in recently reported metal-catalyzed hydrosilations and catecholborane or pinacolborane hydroborations and are consistent with a reaction mechanism involving competitive hydride-migration/reductive-elimination and boryl-migration/β-hydride-elimination steps. Crystallographic and DFT computational studies of the alkenyl-carbaboranes have also revealed unusual cage-bonding features that suggest π-bonding interactions of the B7 cage boron with its olefinic substituent.