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119Sn solid-state MAS NMR spectra of mixed-anion (iodide/chloride and iodide/bromide) halostannates and their precursors at 4.7 T, 12 kHz MAS and 298 K: (a) SnI2; (b) MASnI3; (c) MASnCl2.7I0.3 (the signals at 249 and −395 ppm were detected with recycle delays of 50 ms and 50 s, respectively); (d) MASnBr0.9I2.1; (e) MASnBr1.5I1.5; (f) MASnBr2.1I0.9; (g) MASnBr2.55I0.45; (h) MASnBr2.7I0.3; (i) MASnBr3; (j) SnI4; (k) MA2SnI6. † indicates trace unreacted SnCl2.
