If a ligand has a name with...

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Hannah Morales 1D
Posts: 31
Joined: Fri Sep 29, 2017 7:06 am

If a ligand has a name with...

Postby Hannah Morales 1D » Sun Dec 02, 2018 11:19 am

In Week 9 Wednesday's lecture, Dr. Lavelle put in his lectures

if ligand has a name with Di-, Tri-, Tetra-, or Polydentate then use prefixes
Bis-, Tris-, tetrakis-, pentakis-

but what does that mean?

What is an example of using a prefix like this?

Is there a table that we can use that states when/ how to name a coordination compound?

Sara Flynn 2C
Posts: 60
Joined: Fri Sep 28, 2018 12:23 am

Re: If a ligand has a name with...

Postby Sara Flynn 2C » Sun Dec 02, 2018 11:51 am

for example the ligand NH2CH2CH2NHCH2CH2NH2 is called diethylenetriamine and if there were two of them located in a cordination compound then it would be bisdiethylenetiramine in the naming

David S
Posts: 54
Joined: Fri Sep 28, 2018 12:15 am

Re: If a ligand has a name with...

Postby David S » Sun Dec 02, 2018 12:05 pm

Another example is Na[Fe(OH2)_2(C2O4)_2].
The ligand C2O4^2- is oxalate, which is bidentate. Since we have two of these polydentate anions, we use bis- prefix to describe them in the full name (even though the name of the anion doesn't contain di-, tri-, etc.):
Sodium diaquabisoxalatoferrate(III)
Last edited by David S on Sun Dec 02, 2018 12:08 pm, edited 1 time in total.

Nick Bazett 1F
Posts: 32
Joined: Fri Sep 28, 2018 12:15 am

Re: If a ligand has a name with...

Postby Nick Bazett 1F » Sun Dec 02, 2018 12:07 pm

What is a ligand and what is its signifigance?

RoopshaChatterjee 1G
Posts: 30
Joined: Fri Sep 28, 2018 12:17 am

Re: If a ligand has a name with...

Postby RoopshaChatterjee 1G » Sun Dec 02, 2018 12:38 pm

A ligand is an ion or molecule that binds to a central metal atom to form a coordination complex.

Rami_Z_AbuQubo_2K
Posts: 89
Joined: Thu Jun 07, 2018 3:00 am

Re: If a ligand has a name with...

Postby Rami_Z_AbuQubo_2K » Sun Dec 02, 2018 2:16 pm

When something is polydentrate it means that the electron lone pairs are found to be distributed among different atoms on a particular ligand rather than having the electron lone pairs on one atom, where it would not be polydentrate. Hope this helps


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