21118-36-5

Upstream product

• 101-02-0 triphenyl phosphite 
• 47925-79-1 tetrakis(triphenylphosphite)cobalt⁽⁰⁾ 
• 73949-61-8 Co(CO)3{P(O(C₆H₅))3} 
• 725726-67-0 HCo(CO)2(P(O(C₆H₅))3)2 
• 106-99-0 buta-1,3-diene 
• 15226-74-1 dicobalt octacarbonyl 
• 34778-24-0 Fe⁽¹⁺⁾*Co*C₅H₅^(1-)*6CO=(C₅H₅)Fe(CO)2Co(CO)4 
• 57574-46-6 [HCo(CO)3(P(OPh)3)] 
• 3947-76-0 N-methylquinolinium iodide 

Downstream Products

• 19298-61-4 Co₂(CO)7[P(OPh)3] 
• 42989-56-0 Co((CH₃)3Sn)(CO)3P(OC₆H₅)3 
• 53564-94-6 Co(CO)3{P(O(C₆H₅))3}^(1-) 
• 15708-76-6 trans-Cl₂Sn(Co(CO)3P(OPh)3)2 
• 57574-46-6 [HCo(CO)3(P(OPh)3)] 
• 57574-48-8 [HCo(CO)2(P(OPh)3)2] 
• 64519-62-6 cobalt tetracarbonyl hydride 
• 42989-54-8 CoGe(C₆H₅)3P(OC₆H₅)3(CO)3 
• 86885-14-5 {Co(CO)3P(OC₆H₅)3}2GeF₂ 
• 78232-08-3 Co(CO)3P(OPh)3((S)-Ge(1-Np)PhMe) Np = naphthyl = Naphthyl 
• 15639-04-0 Co(CO)2(P(O-phenyl)3)NO 

Relevant academic research and scientific papers

A convenient electrosynthesis of new complexes [Sn{Co(CO)3PR3}4] and their spectroscopic characterization

New complexes [Sn{Co(CO)3PR3}4], which have been identilied by FTIR, mass spectroscopy, (31)P{(1)H} and (119)Sn{(1)H} NMR, were obtained easilyin high yield (70-80%) by electroreduction of a series of water-solubleor water-insoluble complexes [Co2(CO)6(PR

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.

Thermal substitution reactions of the heterodinuclear complex CpFe(CO)2Co(CO)4 with phosphorus ligands

The thermal reactions of CpFe(CO)2Co(CO)4 with phosphorus ligands (L = P(n-Bu)3, P(c-Hx)3, PPh3, P(OPh)3, PMePh2) lead to formation of both ionic disproportionation products, [CpFe(CO)2L]+ [Co(CO)4]-, via a radical chain path, and neutral monosubstitution products, CpFe(CO)2Co(CO)3L, via a CO-dissociative pathway. Reaction with PPh(o-CH3Ph)2 results in forming only the monosubstituted product and no reactions were observed with the two bulkiest ligands, P(o-CH3Ph)3 and P(C6F5)3. The slow CO-dissociative pathway is always in effect in these reactions, and the product distribution is therefore determined by the rate of radical chain process. The steric and electronic requirements on the ligand for the radical chain process to dominate are much milder than that for other homodinuclear and heterodinuclear complexes that have been studied.

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.