Niobium Bromide (NbBr5) Br5Nb1(cr,l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 250 298.15 147.904 258.780 258.780 0. -556.054 -508.887 89.155 300 147.904 259.695 258.783 0.274 -556.176 -508.593 88.554 400 147.904 302.245 264.585 15.064 -630.093 -477.367 62.338 500 147.904 335.249 275.540 29.854 -627.096 -439.535 45.918 527.000 147.904 343.027 278.800 33.848 CRYSTAL <--> LIQUID 527.000 215.228 388.599 278.800 57.864 TRANSITION 600 206.397 415.912 293.867 73.227 -595.635 -405.932 35.339 700 194.430 446.854 313.591 93.284 -587.580 -374.969 27.981 800 180.611 471.921 331.870 112.041 -580.902 -345.069 22.531 900 166.218 492.368 348.605 129.387 -575.705 -315.918 18.335