Chelating compounds

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Artin Allahverdian 2H
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Joined: Fri Sep 28, 2018 12:26 am

Chelating compounds

Postby Artin Allahverdian 2H » Mon Nov 26, 2018 12:55 pm

Can someone please explain why chelating compounds can form multiple bonds with the same metal, and why just any other coordination compound cannot do the same?

Posts: 65
Joined: Fri Sep 28, 2018 12:16 am

Re: Chelating compounds

Postby deepto_mizan1H » Mon Nov 26, 2018 2:33 pm

The chelating compounds have to do with the ligands involved around the metal ion in the center, which forms the rings characteristic of a chelating compound. The reason certain ligands allow the development of the chelating compound has to do with what types of bonds can be formed from those compounds and whether it can form a solid ring structure. Analyzing the composition of chelating compounds can help to find patterns.

Manya Bali 4E
Posts: 66
Joined: Fri Sep 28, 2018 12:23 am

Re: Chelating compounds

Postby Manya Bali 4E » Thu Nov 29, 2018 10:01 am

Specifically, chelating compounds tend to have a ligand that is essentially a string of atoms attached to each other through sigma bonds. Sigma bonds, unlike pi bonds, are flexible so individual atoms in the string can rotate/move around. This characteristic allows the string of atom to bend so that both ends of the string can bond to the same central metal atom, forming a "ring."

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