Ion-associate Tentative Formulae Calc. Found Calc. Found Calc. Found
Ns-ST4   (white) [C12H19N2O2][SiW12O40]4 18.57 18.00 2.45 2.65 3.61 3.50
Ns-SM4  (f.yellow) [C12H19N2O2][SiMo12O40]4 28.19 27.65 3.72 3.55 5.48 5.40
Ns-PT3   (buff) [C12H19N2O2][PW12O40]3 12.17 11.83 1.60 1.55 2.36 2.30
Ns-PM3 (g.yellow ) [C12H19N2O2][PMo12O40]3 21.12 20.78 2.79 2.48 4.11 3.92
Ns-TPB(white) [C12H19N2O2][C24H20B] 77.42 77.13 6.19 6.28 4.87 4.62
Table 1: Elemental analyses of the ion-pairs.
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