Cobalt-56 – Knowledge and References

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Radioactivity and radiation

Published in Alan Martin, Sam Harbison, Karen Beach, Peter Cole, An Introduction to Radiation Protection, 2018

Alan Martin, Sam Harbison, Karen Beach, Peter Cole

Thus, if the stable isotope cobalt-59 (Co-59) is bombarded or irradiated with neutrons, atoms of the radioactive isotope cobalt-60 (Co-60) are produced. These atoms will eventually undergo β decay and become atoms of the stable isotope nickel-60 (Ni-60). This process is written as C2759o(n,γ)Co2760→β−N2860i

Inverse coordination chemistry: oxocarbons, other polyoxo carbocyclic molecules and oxygen heterocycles as coordination centers. Topology and systematization

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Journal Information

Published in Journal of Coordination Chemistry, 2020

Ionel Haiduc

The presence of adjacent functional groups, which affords the formation of chelate rings fused with the benzene ring, favors the formation of inverse coordination complexes centered on a benzene-1,3,5-triolato core, creating a tris(bidentate) chelating topology. Illustrative examples are the triacetyl derivative [(µ-C6H3O3(COMe)3 {Cu(chel)}3]3+ chel = N(CH2CH2NH2)(CH2CH2OH)2(63) [55(a)] and carbohydrazonato derivative [(µ-C6H3O3R3(MoO2)3(MeOH)2(H2O)]0 R = CMeN = NCMeO (64) [55(b)] (Scheme 25). More inverse coordination complexes with functionalized benzene-1,3,5-triolato centroligands and chromium [56(a)], manganese [56(b-e)], iron [56(a,f,g)], cobalt [56(h)], nickel [56(i-p)], copper [56(q-v)] and aluminium [56(w)] as coordinated metals with rather intricate peripheral ligands have been reported.