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Figure 7
Double-quantum filtered J-resolved solid-state NMR spectra for (a) bis­(pinacolato)diboron, (b) bis­(catecholato)diboron, and (c) an N-heterocyclic carbene complexed analogue of bis­(catecholato)diboron. MAS NMR spectra (exp, sim) of the NHC complex are also shown in (c). The amplified 3J splitting shows that the B atoms are related by a high-symmetry operation, such as an inversion centre, in (a) and (b), while the symmetry is broken in (c). From Perras & Bryce (2013BB46). Used with permission.

IUCrJ
Volume 4| Part 4| July 2017| Pages 350-359
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517006042