首页|Reaction of a {Co(NO)}(8) complex with superoxide: Formation of a six coordinated [Co-II(NO)(O-2(center dot-))] species followed by peroxynitrite intermediate
Reaction of a {Co(NO)}(8) complex with superoxide: Formation of a six coordinated [Co-II(NO)(O-2(center dot-))] species followed by peroxynitrite intermediate
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NSTL
Elsevier
A nitrosyl complex of cobalt(II) porphyrinate, [Co(F20TPP2-)(NO)], (F20TPPH2 = 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin) having {Co(NO)}(8) configuration was synthesized and characterized by means of spectroscopic and structural analyses. Single crystal X-ray structure of the complex revealed the square pyramidal geometry around the cobalt center with a bent nitrosyl group. It reacts with superoxide (O-2(center dot-)) ion in CH2Cl2 at -40 degrees C to result in the corresponding nitrite (NO2-) complex. Involvement of a cobalt(II)-peroxynitrite intermediate is proposed in the course of the reaction. Moreover, spectroscopic studies suggested the formation of a transient six-coordinated [Co-II(NO)(O-2(center dot-))] species.
NSTL
Elsevier
