[Li(H2O)4]+: while solvation numbers of 3 to 6 have been found for lithium aqua ions, solvation numbers less than 4 may be the result of the formation of contact ion pairs, and the higher solvation numbers may be interpreted in terms of water molecules that approach [Li(H2O)4]+ through a face of the tetrahedron, though molecular dynamic simulations may indicate the existence of an octahedral hexaaqua ion.
lˈaɪ ˈeɪtʃ tˈuː ˈoʊ fˈoːɹ plˈʌs: wˌaɪl səlvˈeɪʃən nˈʌmbɚz ʌv θɹˈiː tə sˈɪks hɐvbɪn fˈaʊnd fɔːɹ lˈɪθiəm ˈækwə ˈaɪɑːnz, səlvˈeɪʃən nˈʌmbɚz lˈɛs ðɐn fˈoːɹ mˈeɪ biː ðə ɹɪzˈʌlt ʌvðə fɔːɹmˈeɪʃən ʌv kˈɑːntækt ˈaɪɑːn pˈɛɹz, ænd ðə hˈaɪɚ səlvˈeɪʃən nˈʌmbɚz mˈeɪ biː ɪntˈɜːpɹɪɾᵻd ɪn tˈɜːmz ʌv wˈɔːɾɚ mˈɑːlɪkjˌuːlz ðæt ɐpɹˈoʊtʃ lˈaɪ ˈeɪtʃ tˈuː ˈoʊ fˈoːɹ plˈʌs θɹuː ɐ fˈeɪs ʌvðə tˌɛtɹɐhˈiːdɹən, ðˌoʊ məlˈɛkjʊlɚ daɪnˈæmɪk sˌɪmjʊlˈeɪʃənz mˈeɪ ˈɪndᵻkˌeɪt ðɪ ɛɡzˈɪstəns əvən ˌɑːktɐhˈiːdɹəl hˈɛksɑːkwə ˈaɪɑːn.