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119Sn solid-state MAS NMR spectra of mixed-anion (chloride/bromide) halostannates and their precursors at 4.7 T, 12 kHz MAS (except for SnBr4), and 298 K: (a) SnCl2; (b) SnBr2; (c) MASnCl3; (d) MASnCl2.7Br0.3; (e) MASnCl2.1Br0.9; (f) MASnCl1.5Br1.5; (g) MASnBr3; (h) SnBr4 (at 0.6 kHz MAS to prevent melting); (i) MA2SnBr6. † indicates trace unreacted SnCl2.
