Structural parameters, electron count and spectroscopic details of different types of non-spherical clusters.
| Clusters | SEP | Degree | d M–M (Å) | d avg.M–B (Å) | d avg.B–B (Å) | 11B NMR (ppm) | Ref. | ||
|---|---|---|---|---|---|---|---|---|---|
| Highest | Lowest | ||||||||
| 8-Vertex |
|
7 | 6 | 3 | 2.7688(3) | 2.164 | 1.735 | −16.3 to 97.4 | This work |
| 9-Vertex |
|
9 | 6 | 4 | — | 2.227 | 1.757 | a | 15 |
|
7 | 7 | 4 | 2.7875(6) | 2.163 | 1.756 | 3.6 to 101.7 | 8a, 21 | |
|
8 | 6 | 3 | 2.8051(5) | 2.143 | 1.757 | 6.2 to 107.7 | This work | |
| 10-Vertex |
|
10 | 6 | 4 | 2.571(1) | 2.102 | 1.815 | −142.9 to 8.5 | 12 |
|
8 | 7 | 4 | 2.8345(8) | 2.184 | 1.801 | 21.9 to 97.9 | 8a | |
|
9 (Os) | 6 | 4 | 2.9046(11) (Os) | 2.232 (Os) | 1.800 (Os) | −13.0 to 89.3 (Os) | 19, this work | |
| 10 (Ir) | 2.802 (Ir) | 2.170 (Ir) | 1.764 (Ir) | −10.6 to 81.9 (Ir) | |||||
| 11-Vertex |
|
9 | 8 | 4 | 2.8604(5) | 2.209 | 1.751 | −28.7 to 94.1 | 8a |
|
10 | 7 | 4 | 2.8505(7) | 2.193 | 1.750 | 2.4 to 95.9 | This work | |
| 12-Vertex |
|
10 | 8 | 4 | 2.8192(1) | 2.237 | 1.721 | −22.9 to 60.0 | 8a |
|
11 | 6 | 4 | 2.832(2) | 2.228 | 1.730 | −8.7 to 43.9 | This work | |