No information was given on the Cl-O system in [Massalski2].

The Cl-O phase diagram shown in Fig. 1 was determined by [1970Kep] by measuring the freezing point of mixed liquids of Cl2 and ClO2.

Fig. 1
figure 1

Cl-O phase diagram

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Table 1 shows Cl-O crystal structure data. No information is available on solid ClO2.

Table 1 Cl-O crystal structure data
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