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ection III: Supplemental Literature Review

Cl-W H. Okamoto

The W-Cl phase diagram was unknown in [Massalski2]. Figure 1 shows the W-Cl phase diagram determined by [1977Dro1] using DTA and x-ray diffraction. Part of this phase diagram between WCl5 and WCl6 had been reported earlier by [1977Dro2]. Table 1 Phase

W-Cl crystal structure data in Table 1 were taken from [2007Vil]. References 1977Dro1: D.V. Drobot and A.V. Nikolaev, Equilibrium Diagram of the WCl4-WCl6 System, Zh. Neorg. Khim., 1977, 22(8),

W-Cl crystal structure data Composition, at.% Cl

Pearson symbol

Space group

Strukturbericht designation

Prototype

0 66.7 75 80 83.3 83.3 85.7 85.7 85.7 100

cI2 oC72 hR72 mC20 ... mC72 ... hP21 hR21 oC8

Im3m Cmca R3 C12/m1 ... C12/m1 ... P3m1 R3 Cmca

A2 ... ... ... ... ... ... ... ... A14

W MoCl2 ... ... ... ... ... UCl6 ... I

(W) (a) WCl2 (a) WCl3 (a) WCl4 bWCl5 aWCl5 cWCl6 bWCl6 aWCl6 (Cl) (a) (a) Not shown in Fig. 1

Weight Percent Chlorine 44

45

46

47

49

48

50

51

52

53

300

280

280°C 270°C

L

γ WCl6

240°C

220°C

βWCl5

220

βWCl6

240

WCl4

Temperature,°C

260

198°C

200

190°C 180°C

180

160

αWCl6

αWCl5

176°C

140 80

81

82

83

84

85

Atomic Percent Chlorine Fig. 1 W-Cl phase diagram

402

Journal of Phase Equilibria and Diffusion Vol. 31 No. 4 2010

Supplemental Literature Review: Section III p 2248-2250, in Russian, TR: Russ. J. Inorg. Chem., 1977, 22(8), p 1217-1218 1977Dro2: D.V. Drobot, S.A. Ulanov, and A.V. Nikolaev, Phase Equilibria in the Tungsten-Chlorine-Oxygen System, Zh. Neorg.

Khim., 1977, 22(8), p 1956-1960, in Russian, TR: Russ. J. Inorg. Chem., 1977, 22(8), p 1062-1064 2007Vil: P. Villars and K. Cenzual, Pearson’s Crystal Data CD-ROM, ASM International, OH, 2007

Journal of Phase Equilibria and Diffusion Vol. 31 No. 4 2010

403