1239498-09-9

Basic information

• Product Name: [(η5-C5Me4H)OsCl(PPh3)2]
• CAS NO: 1239498-09-9
• Molecular Weight: 871.437
• Mol File: 1239498-09-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [(η5-C5Me4H)OsCl(PPh3)2](CAS DataBase Reference)
• NIST Chemistry Reference: [(η5-C5Me4H)OsCl(PPh3)2](1239498-09-9)
• EPA Substance Registry System: [(η5-C5Me4H)OsCl(PPh3)2](1239498-09-9)

Safety Data

• Hazardous Substances Data: 1239498-09-9(Hazardous Substances Data)

Upstream product

• 244011-92-5 OsH₃Cl(PPh₃)₃ 
• 4249-10-9 1,2,3,4-tetramethylcyclopenta-1,3-diene 

Relevant articles and documents

Substituted cyclopentadienyl osmium complexes from the reactions of OsH3Cl(PPh3)3 with fulvenes and cyclopentadienes

Two methodologies were developed for the preparation of half-sandwich osmium complexes with the general formula (η5-cyclopentadienyl) OsCl(PPh3)2. The first approach involves the reactions of OsH3Cl(PPh3)3 with cyclopentadienes. Treatment of OsH3Cl(PPh3)3 with cyclopentadienes gives (η5-cyclopentadienyl)OsCl(PPh3)2 via C-H oxidative addition of cyclopentadienes followed by reductive elimination of hydrogen. The methodology has enabled us to synthesize a series of half-sandwich osmium complexes containing Cp, Cp*, indenyl, and C5Me 4R (R = H, Et, n-Pr). The second approach involves the insertion reactions of OsH3Cl(PPh3)3 with fulvenes. Treatment of OsH3Cl(PPh3)3 with C6-substituted fulvenes produces cleanly monosubstituted cyclopentadienyl osmium complexes (η5-C5H4CHRR′)OsCl(PPh 3)2 (R = H, R′ = p-C6H4CH 3, p-C6H4OCH3, CMe3; R = R′ = Ph) via hydride transfer to the electrophilic exocyclic carbon of fulvenes. Under similar conditions, OsH3Cl(PPh3) 3 reacts with C6-monosubstituted 1,2,3,4-tetramethylfulvenes to give pentasubstituted cyclopentadienyl osmium complexes (η5-C 5Me4CH2R)OsCl(PPh3)2 (R = p-C6H4CH3, p-C6H 4OCH3, pyrenyl).