| C9—Sn1—C9i | 109.73 (16) |
| C9—Sn1—C1 | 104.69 (11) |
| C9—Sn1—C1i | 108.35 (11) |
| C1—Sn1—C1i | 120.82 (17) |
Symmetry code: (i) 
.
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