Under high pressure the boron–boron bonding in the lithium borides changes from following Wade's rules to forming Zintl anions like the rest of group 13.
ˌʌndɚ hˈaɪ pɹˈɛʃɚ ðə bˈoːɹɑːn bˈoːɹɑːn bˈɑːndɪŋ ɪnðə lˈɪθiəm bˈoːɹaɪdz tʃˈeɪndʒᵻz fɹʌm fˈɑːloʊɪŋ wˈeɪdz ɹˈuːlz tə fˈɔːɹmɪŋ zˈɪntəl ˈænaɪənz lˈaɪk ðə ɹˈɛst ʌv ɡɹˈuːp θˈɜːtiːn.