Table 1. Selected geometric parameters (Å, °).
| S1—C7A | 1.7327 (6) | N3—C3A | 1.3820 (7) |
| S1—C2 | 1.7642 (5) | C3A—C7A | 1.4082 (8) |
| C2—N3 | 1.3064 (7) | ||
| C7A—S1—C2 | 89.40 (3) | N3—C3A—C7A | 115.25 (5) |
| N3—C2—S1 | 114.72 (4) | C3A—C7A—S1 | 109.23 (4) |
| C2—N3—C3A | 111.39 (5) |
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