Table 3.

¹H-NMR spectral data for Sn(IV) complexes 1–3.

Sn(IV) Complex	1H-NMR (300 MHz; DMSO-d6, ppm)
1	7.78–7.71 (m, 6H, Ar), 7.35 (d, J = 7.8 Hz, 2H, Ar), 7.27 (s, 2H, Ar), 7.13 (d, J = 7.8 Hz, 2H, Ar), 3.93 (s, 6H, 2OMe), 3.77 (q, J = 7.1 Hz, 2H, 2CH), 1.42 (d, J = 7.1 Hz, 6H, 2Me), 1.22–1.19 (m, 8H, 4CH2), 1.00 (m, 4H, 2CH2), 0.57 (t, J = 7.4 Hz, 6H, 2Me)
2	7.82–7.46 (m, 16H, Ar), 7.40 (d, J = 7.6 Hz, 2H, Ar), 7.29 (s, 2H, Ar), 7.15 (d, J = 7.6 Hz, 2H, Ar), 3.94 (s, 6H, 2OMe), 3.87 (q, J = 7.2 Hz, 2H, 2CH), 1.47 (d, J = 7.2 Hz, 6H, 2Me)
3	7.81–7.71 (m, 6H, Ar), 7.39 (d, J = 7.6 Hz, 2H, Ar), 7.28 (s, 2H, Ar), 7.14 (d, J = 7.6 Hz, 2H, Ar), 3.93 (s, 6H, 2OMe), 3.83 (q, J = 7.2 Hz, 2H, 2CH), 1.42 (d, J = 7.2 Hz, 6H, 2Me), 0.57 (s, 6H, 2Me)