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Vitamin B12: Molecular Structure And Properties

What is the molecular structure of Vitamin B12 and how is it important in our life.

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Vitamin B12 is the only known biomolecule with a stable carbon-metal bond - it is an organometallic compound. The core of the molecule is a corrin ring with various attached sidegroups. The ring consists of 4 pyrrole subunits, joined on opposite sides by a C-CH3 methylene link, on one side by a C-H ...