TY - JOUR
T1 - In Situ XANES of an Iron Porphyrin Irreversibly Adsorbed on an Electrode Surface
AU - Kim, Sunghyun
AU - Sandifer, Marnita
AU - Scherson, Daniel Alberto
AU - Bae, In Tae
AU - Antonio, Mark R.
AU - Ross, Philip N.
AU - Carr, Roger
AU - Woicik, Joseph
PY - 1991/11/1
Y1 - 1991/11/1
N2 -
In situ iron K-edge X-ray absorption near edge structure, XANES, has been employed to examine the axial coordination of (µ-OXO)bis [iron meso-tetrakis(4-methoxyphenyl)porphyrin] (FeTMPP)
2
O, irreversibly adsorbed on a high area carbon substrate, Black Pearl (BP), as a function of applied potential. Analysis of the XANES provides conclusive evidence that the coordination about Fe
3+
in the supported, fully oxidized macrocycle is remarkably different from that about Fe
2+
in the corresponding fully reduced macrocycle. In the adsorbed, oxidized state, (FeTMPP)
2
O retains its µ-OXO character and it undergoes a two-electron reduction to yield predominantly four-coordinate square-planar FeTMPP without axial ligation.
AB -
In situ iron K-edge X-ray absorption near edge structure, XANES, has been employed to examine the axial coordination of (µ-OXO)bis [iron meso-tetrakis(4-methoxyphenyl)porphyrin] (FeTMPP)
2
O, irreversibly adsorbed on a high area carbon substrate, Black Pearl (BP), as a function of applied potential. Analysis of the XANES provides conclusive evidence that the coordination about Fe
3+
in the supported, fully oxidized macrocycle is remarkably different from that about Fe
2+
in the corresponding fully reduced macrocycle. In the adsorbed, oxidized state, (FeTMPP)
2
O retains its µ-OXO character and it undergoes a two-electron reduction to yield predominantly four-coordinate square-planar FeTMPP without axial ligation.
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U2 - 10.1021/ja00024a006
DO - 10.1021/ja00024a006
M3 - Article
AN - SCOPUS:0000873251
SN - 0002-7863
VL - 113
SP - 9063
EP - 9066
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 24
ER -