91583-66-3

Basic information

• Product Name: phenoxotris(triphenylphosphine)cobalt(I)
• Synonyms: phenoxotris(triphenylphosphine)cobalt(I)
• CAS NO: 91583-66-3
• Molecular Weight: 938.971
• Mol File: 91583-66-3.mol

Chemical Properties

• CAS DataBase Reference: phenoxotris(triphenylphosphine)cobalt(I)(CAS DataBase Reference)
• NIST Chemistry Reference: phenoxotris(triphenylphosphine)cobalt(I)(91583-66-3)
• EPA Substance Registry System: phenoxotris(triphenylphosphine)cobalt(I)(91583-66-3)

Safety Data

• Hazardous Substances Data: 91583-66-3(Hazardous Substances Data)

Upstream product

• 21373-88-6 (PPh₃)3CoH(N₂) 
• 500-73-2 phenyl trifluoroacetate 
• 14353-75-4 phenyl decanoate 
• 122-79-2 Phenyl acetate 
• 16308-68-2 allyl phenyl carbonate 
• 93-99-2 benzoic acid phenyl ester 
• 4346-18-3 phenyl butanoate 
• 637-27-4 phenyl propionate 
• 20115-23-5 phenyl valerate 

Relevant articles and documents

Carbon-Oxygen Bond Cleavage of Esters Promoted by Hydrido and Alkylcobalt(I) Complexes Having Triphenylphosphine Ligands. Isolation of an Insertion Intermediate and Molecular Structure of Phenoxotris(triphenylphosphine)cobalt(I)

Carbon-oxygen bonds in aryl and alkyl carboxylates (R'COOR) are selectively cleaved by CoH(N2)(PPh3)3, and carboxylic esters R'COOCH2R' are formed by a Tischchenko type dimerization of aldehyde R'CHO, whereas the reaction of CoMe(PPh3)3 with the esters yields ketones R'COMe.The reaction products are accounted for by assuming insertion of the ester C=O double bond into the Co-H or Co-Me bond, followed by abstraction of the β-alkoxo group by cobalt.The intermediate (β-(ethoxy)alkoxo)cobalt(I) complex Co(OCH(CF3)OEt)(PPh3)3 has been isolated in the reaction of CoH(N2)(PPh3)3 with ethyl trifluoroacetate as well as by alcoholysis of CoH(N2)(PPh3)3 with CF3CH(OEt)OH.Treatment of CoH(N2)(PPh3)3 with phenyl acetate affords a tetrahedral phenoxocobalt(I) complex, Co(OPh)(PPh3)3.Crystals of the complex are monoclinic, space group P21/c, with a = 13.142(2) Angstroem, b = 19.661(3) Angstroem, c = 18.714(3) Angstroem, and β = 91.49(3) degree.Block-diagonal least-squares refinement leads to R = 0.075 and Rw = 0.081 for 2966 reflections.The molecular structure of the complexe consists of a tetrahedron with an O-bonded phenoxo group and three PPh3 ligands; the average Co-P distance is 2.320(4) Angstroem and Co-O 1.900(9) Angstroem, and the average P-Co-P angle is 109.9(1) degree, P-Co-O 109.1(4) degree, and Co-O-C 138.2(9) degree, respectively.

REGIOSELECTIVE C-O BOND CLEAVAGE OF ALLYLIC PHENYL CARBONATES PROMOTED BY GROUP 8 TRANSITION METAL HYDRIDO COMPLEXES

Carbon-oxygen bonds in allylic phenyl carbonates are selectively cleaved by hydrido complexes of Co, Ru and Rh to give Co(OPh)L3, Ru(OPh)L2 and Rh(OPh)L3 with liberation of propylene and CO2.An intermediate complex RuH(O2COEt)L3 has been isolated in the reaction of RuH2(PPh3)4 with allyl ethyl carbonate.Reaction mechanisms are also discussed.