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- W2094165775 abstract "The ligand substitution reactions of complexes of the type trans-[(R)Co(Chel)S]+/0 with L, where chel = (DO)(DOH)pn = 2,2′-(1,3-diaminopropanebis(2-methyl-3-butanone)oxime), R = CH3, L = imidazole, pyrazole, 1,2,4-triazole and 1-methylimidazole, and S = water and MeOH, and chel = (Hdmg)2 = bis(dimethylglyoximate), R = CH2Cl, CH2Br, and CH2I, L = thiourea and pyridine, and S = water, were studied in detail as a function of temperature and pressure. The reported activation parameters (ΔH‡, ΔS‡ and ΔV‡) support the operation of a dissociative interchange (Id) mechanism. Complexes of the type trans-[RCo(Hdmg)2L] (R = CH2Cl, CH2Br, and CH2I; L = H2O and Py) were fully optimized at the B3LYP/LANL2DZp level, and the structural data support the mechanistic assignment based on the reported activation parameters. For the reaction of trans-[(CH3)2Co((DO)(DOH)pn)] with acid, the activation parameters (ΔH‡, ΔS‡ and ΔV‡) were found to be 37 ± 1 kJ mol−1, −86 ± 3 J mol−1K−1 and −18.9 ± 0.7 cm3 mol−1, respectively, and support a protonation mechanism." @default.
- W2094165775 created "2016-06-24" @default.
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- W2094165775 date "2009-01-01" @default.
- W2094165775 modified "2023-10-11" @default.
- W2094165775 title "Mechanistic behaviour of alkylcobaloximes and imino-oxime complexes related to vitamin B12" @default.
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- W2094165775 doi "https://doi.org/10.1039/b816511d" @default.
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