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Postby zoedfinch1K » Sun Nov 24, 2019 4:16 pm

When do we use the bis-, tris-, tetrakis-, pentakis-, etc. prefixes?

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Re: Prefixes

Postby PranaviKolla2B » Sun Nov 24, 2019 4:22 pm

Do you mean in terms of naming compounds?

April Meza 3K
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Re: Prefixes

Postby April Meza 3K » Sun Nov 24, 2019 4:40 pm

They are used to determine the number of times a single ligand attaches to the central metal.

Sydney Jacobs 1C
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Re: Prefixes

Postby Sydney Jacobs 1C » Sun Nov 24, 2019 4:47 pm

Use bis-, tris-, tetrakis-, etc. if the ligand already contains a Greek prefix or if it is polydentate (able to attach at more than one binding site simultaneously.) An example would be K2 [Cr(OH2)2(ox)2], which would be read as potassium diaquabis(oxalato)chromate (II).

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Re: Prefixes

Postby KSong_1J » Sun Nov 24, 2019 5:52 pm

You use those prefixes when a ligand is a polydentate or if it already has a prefix

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Re: Prefixes

Postby rohun2H » Sun Nov 24, 2019 6:32 pm

If the ligand already has a name with di-, tri-, tetra-, or polydentate.

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