Investigation of protonation induced metal-to-metal electron transfer in a cyano-bridged MnIII-FeIII dinuclear
Prashurya Pritam Mudoi1,2, Niku Ahmed1, Anup Choudhury1
1Department of Chemical Sciences, Tezpur University, Napaam 784028, Sonitpur, Assam, India. ngogoi@tezu.ernet.in.
Abstract:
Reaction of [Mn(salophen)Cl] {salophen2- = o-phenylenediamine bis(salicylidenaminato)} with a tricyano Fe(III) precursor complex, [Fe(bbp)(CN)3]2- {H2bbp = bis(2-benzimidazolyl)pyridine}, affords a dinuclear cyano-bridged heterometallic MnIII-(μ-NC)-FeIII fragment in the complex salt [Mn(salophen)(H2O)2][Mn(salophen)(H2O)(μ-NC)Fe(bbp)(CN)2]·4H2O (1). The title compound shows field-induced slow relaxation of magnetization below 2.8 K. Possibility of a protonation induced metal-to-metal electron transfer (MMET) process in the parent complex is probed by UV-visible, electrochemical, and electron spin resonance studies.
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