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Figure 1
Illustration of the structures of 1 [at 210 (2) K], 2 [120 (2) K] and 3 [120 (2) K], with the atomic numbering schemes depicted. Anisotropic displacement parameters are drawn at the 50% probability level. In the case of 3, only one position of the disordered tert-butyl group is shown for clarity. |
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