Cobalt triacetate

Radical cations of hexa-, penta- and tetramethylbenzenes, as well as 1,3,5-tri-and 1,4-di-tert-butylbenzenes have been det ted by ESR in a flow system after inter-.nction with cobalt triacetate in CF3COOH The radical cations of polyfluorinated aromatic compounds proved to be quite stable. Hexafluorobenzene interacted with O2 AsFg in WFj to yield the salt of the hexafluorobenzene radical cation CgF AsFg Octafluoronaphthalene, deca-fluorobiphenyl, hexa-, penta- and 1,2,4,5-tetrafluorobenzenes yield radical cations... 

Scheme 36 Allylic acetoxylation of cyclohexene with cobalt(lll)triacetate.

The observation of glycerol triacetate as a trace product of CO hydrogenation by this ruthenium system in acetic acid solvent (179) suggests that glycolaldehyde (ester) can undergo further chain growth by the process outlined in (26) for the cobalt system. As with formaldehyde, however, a carboxylic acid is apparently necessary to promote formation of the metal-carbon bonded intermediate which can produce the longer-chain product. 

A quadruple nanoparticle imaging system based on Ga was reported by Kim et al Rhodamine modified, silica coated cobalt-ferrite nanoparticle were decorated with luciferase (MFB) and p-SCN bn NOTA (2-(4-isothiocyanatobenzyl)-1,4,7-triazacyclonane-l, 4,7-triacetic acid) followed by Ga incorporation. This example, together with related nanoparticles studies reinforce the view that such systems could become promising multimodal imaging agents for bioluminescence, fluorescence, MRI and PET imaging techniques. ... 

Reactions of zinc(n) and cobalt(n) complexes of ida, Hida, nta , Eten, and dien with cydta - and Hcydta have been studied. The steric effect of the cyclohexane ring in cydta on the rate of substitution is discussed. Other reports of the replacement of one multidentate ligand by another have appeared for the systems Ni(Hida) + dtpa, Ni(edta-OH) -I- dtpa, and Co(gedta) + (edta-OH) [Hida = A-(2-hydroxyethyl)iminodiacetate, (edta-OH) = lV-(2-hydroxyethyI)ethylenedi-amine-AW A -triacetate, gedta = 2,2 -ethylenedioxybis(ethyIamine)-AAW JV -tetra-acetate). Similar studies of aminopolycarboxylate replacement have appeared for zinc(n), lead(n), and cadmium(n). ... 

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