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Prefix bis, tris, tetrakis, etc.

Posted: Mon Dec 03, 2018 3:12 pm
by Tam To 1B
Hello!

I'm a little confused as to when we name coordination compounds with bis, tris, tetrakis, etc.
What's an example of when this is used instead of di, tri, tetra, etc.?

Thank you!

Re: Prefix bis, tris, tetrakis, etc.  [ENDORSED]

Posted: Mon Dec 03, 2018 3:15 pm
by Chem_Mod
You would use this if the compound contains a ligand that has bi- tri- etc. in the name to avoid confusion. For example, palladium (0) tetrakis(triphenylphosphine).

Re: Prefix bis, tris, tetrakis, etc.

Posted: Mon Dec 03, 2018 10:54 pm
by Vicky Lu 1L
Di-, tri-, and tetra- should be used for multiple monodentate ligands while bis-, tris-, tetrakis- would be used for for multiple polydentate ligands.

Re: Prefix bis, tris, tetrakis, etc.

Posted: Mon Dec 03, 2018 11:23 pm
by Manya Kidambi 3I
An example of this - if you had (en)3 (ethylenediamine) for example, it would be tris-ethylenediamine.

Re: Prefix bis, tris, tetrakis, etc.

Posted: Tue Dec 04, 2018 2:18 pm
by danicatran4
Vicky Lu 1L wrote:Di-, tri-, and tetra- should be used for multiple monodentate ligands while bis-, tris-, tetrakis- would be used for for multiple polydentate ligands.

What is a monodentate ligand and what's a polydentate ligand? I don't understand the difference.

Re: Prefix bis, tris, tetrakis, etc.

Posted: Tue Dec 04, 2018 4:32 pm
by Ahmet_Dikyurt_3L
danicatran4 wrote:
Vicky Lu 1L wrote:Di-, tri-, and tetra- should be used for multiple monodentate ligands while bis-, tris-, tetrakis- would be used for for multiple polydentate ligands.

What is a monodentate ligand and what's a polydentate ligand? I don't understand the difference.

Monodentate ligands have one e- donor to bind with another central atom, but bidentate has 2 e- donor, etc...