Structure of vitamin B12
Hodgkin and colleagues reported the structure of vitamin B12.
As reported in: HODGKIN, KAMPER, MACKAY et al. (1956). Structure of Vitamin B12. Nature. doi:10.1038/178064a0
Abstract only
Elements · ← Fe Iron · Ni Nickel →
Co Cobalt
Cobalt sits at the centre of vitamin B12 (cobalamin).
Basic facts
| Symbol | Co |
|---|---|
| Atomic number | 27 |
| Standard atomic weight | 58.93319 |
| Group | 9 |
| Period | 4 |
| Block | d-block |
| Category | Transition metal |
| Standard state | Solid |
| Discovered | 1735 |
Source: PubChem, Cobalt (periodic table data, retrieved 2026-10-19). Group and period follow the standard 18-column periodic table.
Biotech uses & experiments
biology
Topics on this site about cobalt
Entries elsewhere on the site that mention cobalt
Found by name, common compounds and chemical formulas in each entry.
- Lithium cobalt oxide cathode · Lithium (batteries) · 1980
- Virus-built battery nanowires · Virus-templated materials (M13 phage) · 2006
Patents
Search Google Patents for cobalt in biological and medical uses: all patents · recent applications (2022+)
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