Table 4 13C NMR Spectral Dataa of Di- and Trimethyltin(IV)-(HL-2) Mixtures at Different Phs

Table 4 13C NMR spectral dataa of di- and trimethyltin(IV)-(HL-2) mixtures at different pHs

pH / Species (%)b / Cα / C6 / C2 / C4 / C8 / C5 / C1’ / C4’ / C2’ / C3’ / C5’
Guanosine (HGUO) or (HL-2) / - / 156.7 / 153.5 / 151.1 / 135.5 / 116.4 / 86.2 / 85.1 / 73.5 / 70.2 / 61.2
For Me2Sn(IV) + (HL-2) Mixture 1:1 system
4.0 / [Me2Sn(HL-2H−1)]2+ (96.5), [Me2Sn(HL-2)]2+ (0.6) / 6.00 / 159.18 / 152.67 / 148.42 / 133.12 / 114.25 / 88.28 / - / 71.45 / 70.91 / 61.98
7.4 / Me2Sn(HL-2)]2+ (88.6), Me2Sn(OH)2 (1.56) [Me2Sn(HL-2)(OH)]+ (0.027) / 4.15 / - / - / - / 137.28 / 109.19 / - / 80.33 / - / - / 56.28
11.2 / [Me2Sn(OH)3]− (34.2), Me2Sn(OH)2 (31), [Me2Sn(HL-2)(OH)]+ (0.39) / 19.98, 9.89 / 167.52 / 160.92 / 151.07 / 136.67 / 118.05 / - / - / 72.35 / 68.21 / 62.52
For Me2Sn(IV) + (HL-2) Mixture 1:2 System
4.0 / [Me2Sn(HL-2H–1)]2+ (96.45), (HL-2) (49.9), Me2Sn(HL-2)]2+ (3.77) / 6.82 / 159.16 / 154.68 / 151.68 / 138.30 / 122.62 / 88.29 / 86.38 / 74.06 / 70.96 / 61.96
7.4 / Me2Sn(HL-2)]2+ (91.8), (HL-2) (47.7), [Me2Sn(HL-2)(OH)]+ (4.3), [Me2Sn(HL-2H−1)]2+ (3.5) / −0.71 / - / - / 146.78 / 138.34 / - / - / 85.69 / - / 70.48 / 62.02
9.2 / Me2Sn(HL-2)]2+ (57.5), [Me2Sn(HL-2)(OH)]+ (42.0), (HL-2) (28.5), Me2Sn(OH)2 (0.46) / - / - / - / - / 132.05 / 116.45 / - / - / 75.76 / 67.35 / -
11.2 / [Me2Sn(HL-2)(OH)]+ (50.0), [Me2Sn(OH)3]− (29.0), Me2Sn(OH)2 (20.6), Me2Sn(HL-2)]2+ (0.77), (HL-2) (0.77) / 10.16, 0.46 / 156.18 / - / 145.48 / 136.61 / 120.7 / - / 83.32 / - / - / 61.75
For Me3Sn(IV) + (HL-2) Mixture 1:1 system
7.3 / [Me3Sn(HL-2)]+ (100.0) / –2.96 / - / - / 144.84 / - / 118.82 / 89.6 / - / - / 71.81 / 64.67
9.5 / [Me3Sn(HL-2)]+ (98.8), Me3Sn(HL-2)(OH) (0.62) / –2.96 / - / 153.72 / 151.76 / 136.39 / - / 86.98 / 81.25 / 74.29 / 69.6 / -
For Me3Sn(IV) + (HL-2) Mixture 1:2 system
7.0 / [Me3Sn(HL-2)]+ (100.3), (HL-2) (49.7) / –2.81 / 158.8 / - / 151.87 / 132.75 / 123.45 / - / - / - / 67.16 / 60.31
10.8 / [Me3Sn(HL-2)]+ (86.8), Me3Sn(HL-2)(OH) (13.5), (HL-2) (1.56) / –2.98 / 156.22 / - / 147.47 / 130.53 / 116.65 / - / - / - / 68.22 / -

a Solvent: H2O:D2O (9:1); Atom numbers mentioned as in Scheme 1;

b Percentage of species from speciation diagram

2