Electrons Donated By Common Fragments
| Ligand | Electrons contributed (neutral counting) |
Electrons contributed (ionic counting) |
|---|---|---|
| X | 1 | 2 (X-; X = F, Cl, Br, I) |
| H | 1 | 2 (H-) |
| H | 1 | 0 (H+) |
| O | 2 | 4(O2-) |
| N | 3 | 6 (N3-) |
| NR3 | 2 | 2 (NR3; R = H, alkyl, aryl) |
| CR2 | 2 | 4 (CR22-) |
| Ethylene | 2 | 2 (C2H4) |
| cyclopentadienyl | 5 | 6(C5H5-) |
| benzene | 6 | 6 (C6H6) |
Read more about this topic: Electron Counting
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