UC Santa Barbara
Understanding the Role of Hyponitrite in Nitric Oxide Reduction
- Author(s): Wright, AM
- Hayton, TW
- et al.
Published Web Locationhttps://doi.org/10.1021/acs.inorgchem.5b00516
© 2015 American Chemical Society. Herein, we review the preparation and coordination chemistry of cis and trans isomers of hyponitrite, [N2O2]2-. Hyponitrite is known to bind to metals via a variety of bonding modes. In fact, at least eight different bonding modes have been observed, which is remarkable for such a simple ligand. More importantly, it is apparent that the cis isomer of hyponitrite is more reactive than the trans isomer because the barrier of N2O elimination from cis-hyponitrite is lower than that of trans-hyponitrite. This observation may have important mechanistic implications for both heterogeneous NOx reduction catalysts and NO reductase. However, our understanding of the hyponitrite ligand has been limited by the lack of a general route to this fragment, and most instances of its formation have been serendipitous.
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