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The chelate effect is important in biolo...

The chelate effect is important in biological complexes. There is a ----- ligand of particular importance to biological system, the porphyrin ring.

A

tetradentate

B

pentadentate

C

hexadenate

D

bidentate

Text Solution

Verified by Experts

The correct Answer is:
A
The basic structure of the core of metalloporphyrin complexes is shown below:

It is an organic molecule in which alternating double bonds hold the structure in a rigid plane with 4 nitrogen atoms oriented toward the centre. The space in the centre is the right size for many metal ions.
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