Table 1. Selected bond lengths (Å).
| Hg1—N1 | 2.396 (4) |
| Hg1—N2 | 2.395 (4) |
| Hg1—S1 | 2.4201 (16) |
| Hg1—S2 | 2.4488 (16) |
| Hg2—N5 | 2.384 (4) |
| Hg2—N6 | 2.362 (4) |
| Hg2—S3 | 2.4741 (16) |
| Hg2—S4 | 2.4013 (18) |
| Hg1—N1 | 2.396 (4) |
| Hg1—N2 | 2.395 (4) |
| Hg1—S1 | 2.4201 (16) |
| Hg1—S2 | 2.4488 (16) |
| Hg2—N5 | 2.384 (4) |
| Hg2—N6 | 2.362 (4) |
| Hg2—S3 | 2.4741 (16) |
| Hg2—S4 | 2.4013 (18) |