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Figure 3
Side-view on the twofold screw axis causing the tetrel bond formation in case of Sn1 (top) and Sn2 (bottom) with their distances from the screw axis in square brackets. Tin-bromine bonds of the first coordination spheres are drawn as solid sticks, those characterizing the tetrel bonds are visualized as dashed sticks. [Symmetry codes: (1) Mathematical equation − x, −Mathematical equation + y, Mathematical equation − z; (2) x, −1 + y, z; (3) Mathematical equation − x, Mathematical equation + y, Mathematical equation − z; (4) x, 1 + y, z; (5) Mathematical equation − x, −Mathematical equation + y, Mathematical equation − z; (6) x, −1 + y, z; (7) Mathematical equation − x, Mathematical equation + y, Mathematical equation − z; (8) x, 1 + y, z.]

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