294887-64-2

Upstream product

• 74-90-8 hydrogen cyanide 
• 904285-63-8 [(1,1,1-tris(diphenylphosphinomethyl)ethane)Co(III)(η3-crotyl)(CN)][PF6] 
• 13601-11-1 potassium hexacyanochromate(III) 
• 17455-13-9 18-crown-6 ether 
• 773837-37-9 sodium cyanide 
• 22031-12-5 [2-((diphenylphospino)methyl)-2-methyl-1,3-propanediyl]bis[diphenylphosphine] 

Downstream Products

• 294887-66-4 [CH₃C(CH₂P(C₆H₅)2)3Co(CN)2]^(1-) 

Relevant academic research and scientific papers

Cyanide lability and linkage isomerism of hexacyanochromate(III) induced by the Co(II) ion

Reactions between the [MIII(CN)6]3- (M=Fe and Co) anions and the mononuclear complex [CoII(dppe) 2(H2O)][BF4]2 result in the formation of two isostructural trinuclear clusters {[CoII(dppe) 2]2[MIII(CN)6}(BF4). Surprisingly, reactions of [Co(dppe)2(H2O)](BF 4)2 and [Co(triphos)(CH3CN)2] (BF4)2 with [Cr(CN)6]3- yield the mononuclear complexes [Co(dppe)2(CN)](BF4) and [Co(triphos)(CN)2], respectively. In the former case, an unusual pentanuclear intermediate complex {[Co3II(dppe) 4(MeCN)][CrIII(CN)6]2} was isolated. The reaction was probed by solution IR spectroscopy, which revealed a gradual conversion of the v(C≡N) stretches of the starting materials to those of the CN-bridged intermediate and eventually to the single v(C≡N) stretch of the final mononuclear product. The loss of carbon-bound CN- ligands from [Cr(CN)6]3- occurs on a sufficiently slow time-scale for observation of varying degrees of cyanide linkage isomerism in the trigonal bipyramidal complex {[Co(tmphen)2]3[Cr(CN) 6]2}; the study was aided by the use of different Co(II) starting materials. Results obtained by a combination of X-ray crystallography, infrared spectroscopy, and magnetometry provide unequivocal evidence that the presence of certain Lewis acids (e.g., Co(II) in this work and Fe(II) ions and BPh3 in previously reported studies) promote the process of cyanide linkage isomerism, which, in the case of Co(II) species, leads to facile labilization of cyanide ligands from the [Cr(CN)6]3- anion.

Reactivity of 2-methyl-3-butenenitrile in the presence of catalytic amounts of various cobalt complexes in ionic liquid

The behavior of 2-methyl-3-butenenitrile (2M3BN) in the presence of catalytic amount of several cobalt complexes was evaluated. Irrespective of the nature of cobalt complexes and the experimental conditions (presence of ligand [such as P(OPh)3 or pyridine], or/and of Lewis acid [ZnCl 2, AlCl3], organic solvent or ionic liquid), the product of isomerization 2-methyl-2-butenenitrile was obtained instead of the expected rearranged product 3-pentenenitrile (3PN). This result was explained by the activation of CH bond instead of CCN bond. With 3PN, the first example of a reversible cleavage of the CCN with complex derived from Co+ was evidenced.

Coordination compounds of tripodCo(II) and tripodCo(I) - Selective substitution and redox behaviour

The five-coordinate tripodCobalt(II) compound [tripod-Co(II)Cl2] (2) [tripod = CH3C(CH2PPh2)3] undergoes selective substitution of its chlorine groups on activation with KPF6 in the first s