C-Cl (Carbon-Chlorine)

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Section III: Supplemental Literature Review

C-Cl (Carbon-Chlorine) H. Okamoto

The C-Cl phase diagram was unknown in [Massalski2]. Figure 1 shows a partial C-Cl phase diagram between CCl4 and Cl determined by [1975Aba] by means of thermal analysis. The existence of C7Cl5, C5Cl4, C7Cl8,C4Cl5, and CCl3 is reported in [2007Vil] outside the composition range shown in Fig. 1. Table 1 shows C-Cl crystal structure data. In addition to the two forms of CCl4 given in Table 1, [1975Aba]

Table 1

observed a metastable fcc form of CCl4 forming below 27.1 °C. References 1975Aba: M. Abassalti and M. Michaud, Chlorine-Carbon Tetrachloride System. Polymorphism of Tetrachloride, Rev. Chim. Min., 1975, 12(2), p 134-138, in French 2007Vil: P. Villars and K. Cenzual, Pearson’s Crystal Data CD-ROM, ASM International, OH, 2007

C-Cl crystal structure data

Phase

Composition, at.% Cl

Pearson symbol

Space group

Strukturbericht designation

Prototype

bCCl4 aCCl4 (Cl)

80 80 100

o** mC160 oC8

ÆÆÆ C12/c1 Cmca

ÆÆÆ ÆÆÆ A14

ÆÆÆ CBr4 I

Fig. 1 C-Cl phase diagram

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Journal of Phase Equilibria and Diffusion Vol. 31 No. 5 2010