Tungsten Bromide (WBr5) Br5W1(cr) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 298.15 155.461 271.960 271.960 0. -311.708 -269.605 47.234 300 155.645 272.922 271.963 0.288 -311.815 -269.343 46.897 400 165.686 319.074 278.188 16.354 -384.412 -239.991 31.340 500 175.728 357.110 290.273 33.419 -379.091 -204.484 21.362 559.000 182.004 377.052 298.393 43.971 CRYSTAL <--> LIQUID 600 185.770 390.077 304.218 51.516 372.851 170.133 14.811 700 195.811 419.468 318.618 70.595 -365.719 -136.898 10.215 800 205.853 446.270 332.923 90.678 -357.662 -104.748 6.839 900 215.894 471.096 346.912 111.765 -348.673 -73.664 4.275 1000 225.936 494.362 360.506 133.857 -338.750 -43.631 2.279