#NH 4 SnF3 #Hexagonal, R*, Z = 6. The cell was measured on a single crystal diffractometer by #V. Himes at NBS. The value of Z was assumed from the reported density. Donaldson and #O'Donoghue [1964] reported this phase as being orthorhombic. #Lattice constants of this sample #a = 6.8426(9)A c = 15.925(3) #c/a = 2.3273 #Volume 645.73 A 3 15.93 16.68 18.63 26.02 26.96 30.67 31.06 33.73 37.81 40.66 41.59 41.90 42.53 43.10 45.92 46.50 48.20 49.17 49.71 50.54 53.54 55.55 56.19 56.45 57.72