A five-coordinate heme dioxygen adduct isolated within a metal–organic framework
JS Anderson, AT Gallagher, JA Mason… - Journal of the American …, 2014 - ACS Publications
The porphyrinic metal–organic framework (MOF) PCN-224 is metalated with FeII to yield a 4-
coordinate ferrous heme-containing compound. The heme center binds O2 at− 78° C to give
a 5-coordinate heme-O2 complex. For the first time, this elusive species is structurally
characterized, revealing an FeIII center coordinated to superoxide via an end-on, η1 linkage.
Mössbauer spectroscopy supports the structural observations and indicates the presence
of a low-spin electronic configuration for FeIII. Finally, variable-temperature O2 adsorption …
coordinate ferrous heme-containing compound. The heme center binds O2 at− 78° C to give
a 5-coordinate heme-O2 complex. For the first time, this elusive species is structurally
characterized, revealing an FeIII center coordinated to superoxide via an end-on, η1 linkage.
Mössbauer spectroscopy supports the structural observations and indicates the presence
of a low-spin electronic configuration for FeIII. Finally, variable-temperature O2 adsorption …
[引用][C] A Five-Coordinate Heme Dioxygen Adduct Isolated within a Metal–Organic Framework
HT David - 2014
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