Large positive activation volume (+38 cm3mol-1) for the intramolecular electron-transfer reaction from iron (II) to cobalt (III) in (.mu.-pyrazine-N,N') pentaamminecobalt(III) pentacyanoferrate(II) in aqueous solution

Synthesis and Electronic Structure of Pentacyanoosmate(II) Complexes with N-Heterocyclic Ligands

“…The chemistry of pentacyano(L)ferrate(II) complexes has received considerable attention because of the variety of L ligands able to bind to the Fe(CN) 5 3- moiety (H 2 O, NH 3 , amines, phosphines, sulfite, nitrite, NO, CO, N-heterocyclic molecules, etc. ). , Mechanistic studies on the ligand-interchange reactions have been carried out, − as well as on electron transfer reactions with the [Fe II (CN) 5 L] n - ions. The chemistry of mixed-valence binuclear complexes containing Fe II,III (CN) 5 as one of the fragments has also been explored …”

Outer‐Sphere Redox Reactions Leading to the Formation of Discrete CoIII/FeII Pyrazine‐Bridged Mixed‐Valence Compounds

“…[25] Here we present the kinetic and mechanistic study of the reaction of compounds [ [23,24,28] To ascertain the redox-coupled or direct (redox-absent) substitutional nature of the general process being monitored, the reactions with [Co III X(NH 3 ) 5 ] n+ were also monitored in the presence and absence of added ethylenediaminetetraacetic acid (EDTA; [EDTA]/[Co] = 1-2). In the absence of this sequestering agent, an immediate precipitate is formed, as found in other systems, [29][30][31] [6][7][8] For the reactions of complexes with encapsulating macrocycles, [9,10,17,18] the relative stability of the {Co II L} resulting reduced species, as well as the substitution/inner-sphere redox processes that follow the outer-sphere redox reaction ({Co II 4-result in similar outcomes.…”