UN is a prominent “advanced nuclear fuel”, due to its high uranium density and good thermal conductivity. However, its dissolution in water is worse than that of UO2 and is poorly understood. A strong possibility is that there are U6+ ions present, as these are known to be highly soluble, as opposed to the normal U4+ ions that dominate UO2 and are insoluble in water. These U6+ ions could come from U2N3, which is formed at the UN interface on oxidation and contains two U sites. U2N3 orders antiferromagnetically, and experiments on a thin epitaxial film at Diamond in Jan 2019 showed AF order at ~ 73 K with q = 1. No bulk single crystals exist and the phase is hard to stabilize. Since U6+ has no 5f electrons it cannot support magnetic order. We wish to measure the intensities of the first 6 AF reflections to determine the individual moments, and hence whether such a U6+ site exists.