14243-08-4

Basic information

• Product Name: tricarbonyldi(triphenylphosphine)cobalt⁽¹⁺⁾ tetracarbonylcobaltate^(1-)
• Synonyms: tricarbonyldi(triphenylphosphine)cobalt⁽¹⁺⁾ tetracarbonylcobaltate^(1-)
• CAS NO: 14243-08-4
• Molecular Weight: 838.641
• Mol File: 14243-08-4.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: tricarbonyldi(triphenylphosphine)cobalt⁽¹⁺⁾ tetracarbonylcobaltate^(1-)(CAS DataBase Reference)
• NIST Chemistry Reference: tricarbonyldi(triphenylphosphine)cobalt⁽¹⁺⁾ tetracarbonylcobaltate^(1-)(14243-08-4)
• EPA Substance Registry System: tricarbonyldi(triphenylphosphine)cobalt⁽¹⁺⁾ tetracarbonylcobaltate^(1-)(14243-08-4)

Safety Data

• Hazardous Substances Data: 14243-08-4(Hazardous Substances Data)

Upstream product

• 15226-74-1 dicobalt octacarbonyl 
• 15906-55-5 heptacarbonyl(triphenylphosphine)dicobalt(O) 
• 15226-74-1 dicobalt octacarbonyl 
• 603-35-0 triphenylphosphine 
• 201230-82-2 carbon monoxide 

Downstream Products

• 10170-27-1 hexacarbonyldi(triphenylphosphine)dicobalt(O) 
• 19648-81-8 ICo(CO)2(P(C₆H₅)3)2H₂O 
• 19648-80-7 BrCo(CO)2(P(C₆H₅)3)2H₂O 
• 19648-79-4 ClCo(CO)2(P(C₆H₅)3)2H₂O 
• 23807-39-8 Cl₂Co(CO)2(P(C₆H₅)3)2 
• 14767-53-4 ICo(CO)2(P(C₆H₅)3)2 
• 10170-27-1 hexacarbonyl-bis-(triphenylphosphine) dicobalt 
• 128871-94-3 {Co(CO)3(P(C₆H₅)3)2}⁽¹⁺⁾*HgCl₃^(1-)={Co(CO)3(P(C₆H₅)3)2}HgCl₃ 
• 128872-17-3 {Co(CO)3(P(C₆H₅)3)2}⁽¹⁺⁾*NO₃^(1-)={Co(CO)3(P(C₆H₅)3)2}NO₃ 
• 128872-18-4 {Co(CO)3(P(C₆H₅)3)2}⁽¹⁺⁾*I₃^(1-)={Co(CO)3(P(C₆H₅)3)2}I₃ 
• 15906-55-5 heptacarbonyl(triphenylphosphine)dicobalt(O) 

Relevant articles and documents

The Mechanism of Substitution of Dicobalt Octacarbonyl

The kinetics of the substitution of dicobalt octacarbonyl, Co2(CO)8, by triphenylarsine, AsPh3, tributylphosphine, PBu3, triphenylphosphine, PPh3, and 13C-enriched CO in hexane solution has been observed at temperatures in the range of +30 to -15 deg C.Reaction with AsPh3 leads first to Co2(CO)7AsPh3 and then to Co2(CO)62.The rate is the first order in Co2(CO)8 and zero order in AsPh3 and is reduced by added CO.The rate-determining step is presumably CO loss.At 25 deg C, k1=2.0*10-2 s-1.From variation in k with temperature, ΔH*=93+/-4 kJ mol-1 and ΔS=+42+/-10 J K-1 mol-1.The exchange reaction of Co2(CO)8 with 13CO proceeds at 0 deg C with pseudo-first-order rate constant at 0 deg C of about 3*10-4s-1, in good agreement with the extrapolated rate constant for reaction with AsPh3.Reaction with PBu3 is very fast; it leads to Co(CO)4 as the product.Reaction with PPh3 leads to an analogous product but the reaction is slower.The kinetic behavior is complex; the apparent order in Co2(CO)8 varies from values near 1.5 at the lowest temperatures studied to values of about 1.0 at the higher temperatures.The reactions are markedly inhibited by traces of oxygen.A radical chain mechanism fits the observations very well.Key steps in the radical chain involve an electron-transfer process of the form Co(CO)3L.+Co2(CO)8->Co(CO)3L++Co2(CO)8-., rapid dissociation of the radical anion to form Co(CO)4- and Co(CO)4., and then rapid substitution of Co(CO)4. by L to form Co(CO)3L..Numerical integration of the rate equations, using resonable values for the various rate constants, leads to computed behavior that closely approximates the observations.

The application of polymer-bound carbonylcobalt(0) species in linker chemistry and catalysis

Carbonylcobalt(0) species have been used as linkers between alkynes and a polymer support for the first time. The alkynes may be loaded indirectly onto a phosphine functionalised polymer via their hexacarbonyldicobalt(0) complex, or directly onto a cobalt