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Figure 8
Projection along c of (a) the first framework unit and guest ions, and (b) the second framework unit in a basic model for a predicted phase of commensurate composite crystal A2+8Si38 − sAl4 + sOsN60 − s with α = 13/8. Structure parameters used are in Table 5[link], except that Δ is 3/8 for M1_1a, M1_1b, M1_2a and M1_2b, and 1/8 for M1_1c, M1_1d, M1_2c and M1_2d. M1_1c and M1_2c are occupied, but M1_1d and M1_2d are vacant as an example of the possible local structure.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 65| Part 5| August 2009| Pages 567-575
doi:10.1107/S0108768109030419
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