Reversible electrochemical generation of a rhodium(II) porphyrin: thwarting disproportionation with weakly coordinating anions.
We report electrochemical generation of a stable Rh(II) porphyrin (Rh(II)(F(28)TPP)) from a four-coordinate Rh(I) precursor [Rh(I)(F(28)TPP)](-) dissolved in weakly coordinating electrolyte solutions. This work provides the first example of an unambiguously reversible one-electron electrochemical oxidation of a Rh(I)(por), and demonstrates that electrochemical oxidation can be performed under conditions that are compatible with alkane activation. These studies begin to classify those media capable of supporting a stable Rh(II)(por), and those that induce disproportionation.
Sun
Haoran
H
Department of Chemistry and Center for Materials Research and Analysis, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304,USA.
Xue
Feng
F
Nelson
Andrew P
AP
Redepenning
Jody
J
DiMagno
Stephen G
SG