Figure 18.
LiNc-BuO in crystalline form. a: Photograph of needle-shaped LiNc-BuO microcrystals; b: Stacking of LiNc-BuO molecules in a crystal. The EPR line-broadening occurs due to the diffusion of O2 into the microchannels and subsequent spin-spin interaction through the Heisenberg exchange mechanism. Image b is reprinted with permission from ref 191. Copyright 2006 The Royal Society of Chemistry. DOI: 10.1039/b517976a.