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The self-assembly of [Co(MeTPyA)(CHCOO)]PF () and [Fe(bbp)(CN)] affords a cyanido-bridged square-shaped {FeCo} tetranuclear complex, [{Co(MeTPyA)(μ-NC)Fe(bbp)(CN)}]·3HO (; MeTPyA = tris((3,5-dimethylpyrazol-1-yl)methyl)amine and Hbbp = bis(2-benzimidazolyl)pyridine). The possibility of inducing an intramolecular electron transfer coupled spin transition in by employing protonation as an external stimulant is explored. UV-visible spectrophotometric measurements, electrochemical and H NMR studies establish that a reversible intramolecular electron transfer coupled spin transition can be triggered in upon addition of either acid or base.

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http://dx.doi.org/10.1021/acs.inorgchem.1c02302DOI Listing

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