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Figure 2 Ball-and-stick model of the central, drum-like tin-oxygen core of the title compound showing the flat chair-like conformation of the six-membered tin-oxygen rings of the as well as the non-planarity of the tin-oxygen trapezoids; with exception of the hydrogen atoms, which are shown as spheres with common isotropic radius, all other atoms are represented as thermal displacement ellipsoids showing the 50% probability level of the corresponding atom; in cases of the octahedrally coordinated the additional bonds are drawn as shortened sticks to visualize their orientation. |