Chromium(IV)–Peroxo Complex Formation and Its Nitric Oxide Dioxygenase Reactivity
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https://figshare.com/articles/dataset/Chromium_IV_Peroxo_Complex_Formation_and_Its_Nitric_Oxide_Dioxygenase_Reactivity/2485732
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资源简介：
The O2 and NO reactivity of a Cr(II) complex
bearing
a 12-membered tetraazamacrocyclic N-tetramethylated
cyclam (TMC) ligand, [CrII(12-TMC)(Cl)]+ (1), and the NO reactivity of its peroxo derivative, [CrIV(12-TMC)(O2)(Cl)]+ (2),
are described. By contrast to the previously reported Cr(III)–superoxo
complex, [CrIII(14-TMC)(O2)(Cl)]+, the Cr(IV)–peroxo complex 2 is formed in the
reaction of 1 and O2. Full spectroscopic and
X-ray analysis revealed that 2 possesses side-on η2-peroxo ligation. The quantitative reaction of 2 with NO affords a reduction in Cr oxidation state, producing a Cr(III)–nitrato
complex, [CrIII(12-TMC)(NO3)(Cl)]+ (3). The latter is suggested to form via a Cr(III)–peroxynitrite
intermediate. [CrII(12-TMC)(NO)(Cl)]+ (4), a Cr(II)–nitrosyl complex derived from 1 and NO, could also be synthesized; however, it does not react with
O2.
创建时间：
2012-09-19
