Tetraiodosilane (SiI4) I4Si1(l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 159.800 294.309 294.309 0. -174.603 -187.485 32.847 300 159.875 295.298 294.312 0.296 -174.546 -187.565 32.658 393.650 163.744 339.234 299.988 15.449 CRYSTAL <--> LIQUID 400 164.004 341.856 300.632 16.490 203.750 191.230 24.972 500 168.134 378.897 312.703 33.097 -285.814 -180.287 18.834 600 172.264 409.916 326.389 50.117 -278.678 -159.847 13.916 700 176.393 436.781 340.282 67.549 -271.228 -140.627 10.494