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Figure 2 Polyhedron model of the coordination sphere of the tin atom. The tert-butyl groups have been omitted for clarity and weak Sn⋯O interactions are indicated by dashed sticks. Displacement ellipsoids for non-H atoms are shown with 50% probability. Symmetry transformations used to generate equivalent atoms: 1) −x, 1 − y, −z; 2) −x, + y, −z; 3) x, − y, z. |