Ligandsc-Chelate

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Norman Dis4C
Posts: 101
Joined: Sat Sep 28, 2019 12:16 am

Ligandsc-Chelate

Postby Norman Dis4C » Sun Nov 24, 2019 3:21 pm

Can someone explain to me why tetradentate is less common than the others?

Ariel Davydov 1C
Posts: 110
Joined: Thu Jul 11, 2019 12:16 am
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Re: Ligandsc-Chelate

Postby Ariel Davydov 1C » Mon Nov 25, 2019 12:21 pm

Typically, the VSEPR shapes of molecules will not allow for four lone pairs to bind to a transition metal. For example, if a tetrahedral molecule has shareable lone pairs on each attached atom, the shape will only allow for three lone pairs to bind to the transition metal, as the fourth lone pair will be too far away with the other three positioned closer to it. Visualizing a tetrahedron will help in deciding whether or not the ligand is a tridentate or a tetradentate.


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