Table 3. Selected bond lengths (Å) for (2).
| Al1—O3 | 1.8624 (17) | Al1—O2 | 1.8940 (17) |
| Al1—O5 | 1.8718 (18) | S1—O10 | 1.4670 (16) |
| Al1—O6 | 1.8752 (17) | S1—O9 | 1.4672 (16) |
| Al1—O1 | 1.8798 (17) | S1—O8 | 1.4753 (16) |
| Al1—O4 | 1.8855 (17) | S1—O7 | 1.4767 (16) |
| Al1—O3 | 1.8624 (17) | Al1—O2 | 1.8940 (17) |
| Al1—O5 | 1.8718 (18) | S1—O10 | 1.4670 (16) |
| Al1—O6 | 1.8752 (17) | S1—O9 | 1.4672 (16) |
| Al1—O1 | 1.8798 (17) | S1—O8 | 1.4753 (16) |
| Al1—O4 | 1.8855 (17) | S1—O7 | 1.4767 (16) |