Dinitrogen dioxide explained

Dinitrogen dioxide is an inorganic compound having molecular formula . Many structural isomers are possible. The covalent bonding pattern O=N–N=O (a non-cyclic dimer of nitric oxide (NO)) is predicted to be the most stable isomer based on ab initio calculations and is the only one that has been experimentally produced.^[1] In the solid form, the molecules have C_2v symmetry: the entire structure is planar, with the two oxygen atoms cis across the N–N bond. The O–N distance is 1.15 Å, the N–N distance is 2.33 Å, and the O=N–N angle is 95°.^[2]

References

• The 16 valence electronic states of nitric oxide dimer (NO)₂ . Allan L. L. . East . Journal of Chemical Physics . 109 . 6 . August 8, 1998 . 2185–2193 . 10.1063/1.476786 . free .
• The origin of the long N–N bond in N₂O₂: an ab initio valence bond study . Richard D. . Harcourt . Journal of Molecular Structure: THEOCHEM . 206 . 3–4 . April 1990 . 253–264 . 10.1016/0166-1280(90)85140-I . https://www.researchgate.net/publication/244268846_The_origin_of_the_long_N-N_bond_in_N2O2_an_ab_initio_valence_bond_study
• The NO Dimer . Ahmed. Dkhissi . Pascale . Soulard . Agnès . Perrin . Nelly . Lacome . Journal of Molecular Spectroscopy . 183 . 1 . May 1997 . 12–17 . 10.1006/jmsp.1996.7249 .

Notes and References

1. Nguyen . Kiet A. . Gordon . Mark S. . Montgomery . John A. Jr. . Michels . H. Harvey . Structures, Bonding, and Energetics of N₂O₂ Isomers . The Journal of Physical Chemistry . October 1994 . 98 . 40 . 10072–10078 . 10.1021/j100091a021.
2. Park . Jong Keun . Sun . Hosung . Theoretical Determination of Geometrical Structures of the Nitric Oxide Dimer, (NO)₂ . Bulletin of the Korean Chemical Society . 1999 . 20 . 12 . 1399–1408 . ko . 0253-2964.