Table 1. Selected bond lengths (Å) for (1).
| Al1—O6 | 1.869 (2) | S1—O10 | 1.466 (2) |
| Al1—O5 | 1.872 (2) | S1—O7 | 1.470 (2) |
| Al1—O2 | 1.876 (2) | S1—O9 | 1.479 (2) |
| Al1—O3 | 1.880 (2) | N1—O12 | 1.209 (4) |
| Al1—O1 | 1.880 (2) | N1—O11 | 1.225 (4) |
| Al1—O4 | 1.887 (2) | N1—O13 | 1.232 (4) |
| S1—O8 | 1.464 (2) |