I posed[1] this question back in 2010: “(Almost) 100 years of Lewis[2] structures: are they still fit for purpose?”. I was reminded of this when I came across this relatively recent article[3] describing the structures of three binary sulfur-nitrogen anions, as shown in Figure 1 of their article. These are reproduced below (Scheme 1) along with an additional S/N molecule reported separately.[4]
Scheme 1. Molecular structure representations of sulfur nitrides.
References
- H. Rzepa, "(Almost) 100 years of Lewis structures: are they still fit for purpose?", 2010. https://doi.org/10.59350/rncje-xe063
- G.N. Lewis, "THE ATOM AND THE MOLECULE.", Journal of the American Chemical Society, vol. 38, pp. 762-785, 1916. https://doi.org/10.1021/ja02261a002
- R. Boeré, T. Roemmele, and M. Krall, "A Variable Temperature X-ray Diffraction Investigation of [PPN+][S4N5−]: Supramolecular Interactions Governing an Order/Disorder Transformation and the First High Resolution X-ray Structure of the Anion", Molecules, vol. 19, pp. 1956-1975, 2014. https://doi.org/10.3390/molecules19021956
- T. Chivers, and J. Proctor, "Preparation and crystal structure of a new sulphur nitride, S5N6; a molecular basket", Journal of the Chemical Society, Chemical Communications, pp. 642, 1978. https://doi.org/10.1039/c39780000642