Tungsten Fluoride Oxide (WF4O) F4O1W1(cr,l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 133.578 175.728 175.728 0. -1406.908 -1298.058 227.414 300 133.888 176.555 175.731 0.247 -1406.848 -1297.383 225.894 379.000 147.109 209.337 179.398 11.347 CRYSTAL <--> LIQUID 379.000 182.004 222.585 179.398 16.368 TRANSITION 400 182.004 232.400 181.926 20.190 -1397.294 -1261.736 164.766 500 182.004 273.013 196.233 38.390 -1389.868 -1228.713 128.363 600 182.004 306.196 211.879 56.590 -1382.752 -1197.155 104.222 700 182.004 334.252 227.408 74.791 -1375.883 -1166.768 87.065 800 182.004 358.555 242.316 92.991 -1369.215 -1137.351 74.261 900 182.004 379.992 256.446 111.192 -1362.715 -1108.760 64.351 1000 182.004 399.168 269.776 129.392 -1356.359 -1080.885 56.460