polydentate and shape

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Anisha Chandra 1K
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polydentate and shape

Postby Anisha Chandra 1K » Fri Nov 29, 2019 1:34 pm

How should we take molecular shape into account when deciding how many binding sites a polydentate ion has?

Posts: 87
Joined: Fri Aug 30, 2019 12:17 am

Re: polydentate and shape

Postby LReedy_3C » Fri Nov 29, 2019 2:01 pm

I think most polydentates form chelate shapes, so if you see this shape there is more than one bonding site being occupied. I'm not sure how to determine the exact number.

ishaa Diwakar 4E
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Re: polydentate and shape

Postby ishaa Diwakar 4E » Fri Nov 29, 2019 4:33 pm

It is also important to notice whether there are single or double bonds around the atoms with lone pairs, since only single bonds can rotate to form multiple ligands. For example, NH2-CH2-CH2-NH2 has single bonds attaching the Ns, so it can form a shape like \__/, which can be bidentate.

Joowon Seo 3A
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Re: polydentate and shape

Postby Joowon Seo 3A » Sat Nov 30, 2019 1:08 pm

Polydentate shapes are like rings since they have multiple bonding sites.

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