55449-52-0

Upstream product

• 725726-67-0 HCo(CO)2(P(O(C₆H₅))3)2 
• 106-99-0 buta-1,3-diene 
• 101-02-0 triphenyl phosphite 
• 15226-74-1 dicobalt octacarbonyl 
• 57574-46-6 [HCo(CO)3(P(OPh)3)] 
• 3947-76-0 N-methylquinolinium iodide 
• 73949-61-8 Co(CO)3{P(O(C₆H₅))3} 

Downstream Products

• 78232-08-3 Co(CO)3P(OPh)3((S)-Ge(1-Np)PhMe) Np = naphthyl = Naphthyl 
• 86885-14-5 {Co(CO)3P(OC₆H₅)3}2GeF₂ 
• 53564-94-6 Co(CO)3{P(O(C₆H₅))3}^(1-) 
• 15708-76-6 trans-Cl₂Sn(Co(CO)3P(OPh)3)2 
• 64519-62-6 cobalt tetracarbonyl hydride 
• 57574-46-6 [HCo(CO)3(P(OPh)3)] 
• 57574-48-8 [HCo(CO)2(P(OPh)3)2] 
• 42989-54-8 CoGe(C₆H₅)3P(OC₆H₅)3(CO)3 
• 42989-56-0 Co((CH₃)3Sn)(CO)3P(OC₆H₅)3 
• 15639-04-0 Co(CO)2(P(O-phenyl)3)NO 

Relevant academic research and scientific papers

Stable catalyst for intermolecular Pauson-Khand reaction

The catalytic activity of previously formed Co2(CO) 6[P(Ph)3]2 (1) was compared with Co 2(CO)8 and the system formed by Co2(CO) 8 plus PPh3 in the intermole

Synthesis, crystal structure and hydroformylation activity of triphenylphosphite modified cobalt catalysts

The dinuclear complex [Co2(CO)6{P(OPh) 3}2] (2) has been synthesised and was fully characterised. The solid state structure revealed a trans diaxial geometry, no bridging carbonyls, and Co-Co and Co-P bond lengths of 2.6722(4) and 2.1224(4) A, respectively. Catalysed hydroformylation of 1-pentene with 2 was attempted at temperatures in the range 120 to 210°C and pressures between 34 and 80 bar. High pressure spectroscopy (HP-IR and HP-NMR) was used to detect hydride intermediates. High pressure infrared (HP-IR) studies revealed the formation of [HCo(CO)3P(OPh)3] (4) at ca. 110°C, but at higher temperatures absorption bands corresponding to [HCo(CO)4] (3) were observed. The hydride intermediate 4 has also been synthesised and characterised. Upon increased ligand concentration, HP-IR studies showed the formation of new carbonyl absorption bands due to a higher substituted cobalt carbonyl complex-[HCo(CO)2{P(OPh)3}2] (5), which is believed to be catalytically less active. Complex 5 has been synthesised independently and was fully characterised. A low temperature crystal structural study of 5 revealed a trigonal bipyramidal structure with a trans H-Co-CO arrangement and two equatorial phosphite ligands, the Co-P bond lengths being 2.1093(8) and 2.1076(8) A, respectively.

Charge-Transfer Ion Pairs. Structure and Photoinduced Electron Transfer of Carbonylmetalate Salts

Brightly colored crystals, readily isolated from such colorless carbonylmetalates as Co(CO)4(1-), Mn(CO)5(1-), and V(CO)6(1-) in conjunction with various metallocenium and pyridinium cations, are identified as charge-transfer (CT) salts by their unambiguous absorption and diffuse reflectance spectra.X-ray crystallography of such CT salts establishes the relevant interionic separations, the spatial cation/anion orientations, as well as the deviations from tetrahedral Co(CO)4(1-) configuration that are all inherent to the charge-transfer interaction of intimate ion pairs.The Co(CO)4(1-) distortions, as observed in the crystal structures, are also revealed by their characteristic carbonyl IR spectra.The persistence of the unique carbonyl IR and charge-transfer absorption bands in nonpolar solvents thus leads to contact ion pairs (CIP) that are closely related or structurally the same as those elucidated by X-ray crystallography.Accordingly, the charge-transfer excitation of contact ion pairs can be examined directly in solution by time-resolved spectroscopy.The spectral observation of the radical pair .> from the 532-nm excitation of the charge-transfer salt with a 10-ns laser pulse represents the experimental verification of Mulliken theory.As such, the efficient scavenging of such labile 17-electron carbonylmetal radicals as Co(CO)4. and Mn(CO)5. affords a rich menu of productive photochemistry attendant upon the charge-transfer excitation of contact ion pairs.

Solution Homolytic Bond Dissociation Energies of Organotransition-Metal Hydrides

The homolytic bond dissociation energies (BDEs) of the mononuclear metal carbonyl hydride complexes (η5-C5H5)M(CO)3H (M = Cr, Mo, W), (η5-C5Me5)Mo(CO)3H, (η5-C5H5)W(CO)2(PMe3)H, (η5-C5H5)M(CO)2H (M = Fe, Ru), H2Fe(CO)4, Mn(CO)4PPh3H, Mn(CO)5H, Re(CO)5H, and Co(CO)3LH (L = CO, PPh3, P(OPh)3) have been estimated in acetonitrile solution by the use of a thermochemical cycle that reguires knowledge of the metal hydride pKa and the oxidation potential of its conjugate base (anion).The BDE values obtained by this method fall in the range 50-67 kcal/mol.In mostcases, these results agree well with literature data.Our data provide strong support for the common assumption that the M-H bond energies are greater for third-row and for second-row metals than for first-row metals, the difference being 5-11 kcal/mol.Effects of neither phosphine or phosphite substitution nor permethylation of the cyclopentadienyl ring on the M-H bond energies could be detected within the error limits of the method.The results are discussed in relation to previous M-H BDE estimates and metal hydride reactivity patterns.