Weird Words of Science 8: Ligands, the ties that bind
Many transition metals react with bases (such as ammonia) to produce
beautifully colored transition metal-ligand complexes. The word ligand
comes from the Latin ligare which means to tie or bind. The same root
leads to ligaments, which tie your bones together.
The photo shows green Ni(H[2]O)[6]^2+ and blue green Ni(NH[3])[6]^2+.
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