Tungsten Fluoride Oxide (WF4O) F4O1W1(l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 182.004 178.915 178.915 0. -1405.255 -1297.355 227.291 300 182.004 180.041 178.918 0.337 -1405.106 -1296.686 225.773 379.000 182.004 222.585 183.759 14.715 CRYSTAL <--> LIQUID 400 182.004 232.400 186.057 18.537 1397.294 1261.736 164.766 500 182.004 273.013 199.538 36.738 -1389.868 -1228.713 128.363 600 182.004 306.196 214.633 54.938 -1382.752 -1197.155 104.222 700 182.004 334.252 229.769 73.138 -1375.883 -1166.768 87.065 800 182.004 358.555 244.382 91.339 -1369.215 -1137.351 74.261 900 182.004 379.992 258.282 109.539 -1362.715 -1108.760 64.351 1000 182.004 399.168 271.429 127.740 -1356.359 -1080.885 56.460