| S1—O6 | 1.4398 (13) | S2—O5 | 1.4386 (14) |
| S1—O4 | 1.4397 (14) | S2—O7 | 1.4416 (15) |
| S1—C1 | 1.7563 (19) | S2—C2 | 1.756 (2) |
| S1—C3 | 1.7889 (18) | S2—C3 | 1.7811 (19) |
| O6—S1—O4 | 118.02 (8) | O5—S2—C2 | 109.70 (11) |
| O6—S1—C1 | 108.72 (9) | O7—S2—C2 | 109.39 (11) |
| O4—S1—C1 | 109.82 (10) | O5—S2—C3 | 108.90 (9) |
| O6—S1—C3 | 104.48 (8) | O7—S2—C3 | 105.13 (9) |
| O4—S1—C3 | 109.10 (8) | C2—S2—C3 | 104.87 (10) |
| C1—S1—C3 | 105.96 (10) | S2—C3—S1 | 117.20 (10) |
| O5—S2—O7 | 117.99 (9) |