tˈuː stɹˈʌktʃɚz hɐvbɪn vˈɛɹᵻfˌaɪd baɪ sˈɪŋɡəl kɹˈɪstəl ˈɛksɹˈeɪ kɹˌɪstɐlˈɑːɡɹəfi æz wˈɛl æz baɪ sˈɪks lˈaɪ, sˈɛvən lˈaɪ, ænd θˈɜːtiːn sˈiː ˌɛnˌɛmˈɑːɹ spɛktɹˈɑːskəpi.
Two structures have been verified by single crystal X-ray crystallography as well as by 6Li, 7Li, and 13C NMR spectroscopy.