Order of Ligands/naming

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Chloe Shamtob 2H
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Order of Ligands/naming

Postby Chloe Shamtob 2H » Sat Dec 05, 2020 2:15 pm

When writing the formula for a coordinate compound with more than one ligand, how do you know which one to put first in the brackets?

Emma Ide 2E
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Re: Order of Ligands/naming

Postby Emma Ide 2E » Sat Dec 05, 2020 2:21 pm

It goes in alphabetical order, not including the prefix.

Sophia Spungin 2E
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Re: Order of Ligands/naming

Postby Sophia Spungin 2E » Sat Dec 05, 2020 2:53 pm

As previously mentioned, they are listed alphabetically excluding the prefix. For example 'pentaamine' comes before 'chloro' because you reference the a in amine and not the p in penta

Hailey Qasawadish 2J
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Re: Order of Ligands/naming

Postby Hailey Qasawadish 2J » Sat Dec 05, 2020 5:14 pm

As others have said, you write them in alphabetical order. And, you do not apply the prefixes when looking at the alphabetical order.

Jason_John_2F
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Re: Order of Ligands/naming

Postby Jason_John_2F » Sat Dec 05, 2020 5:20 pm

name the ligands first in alphabetical order then the metal

Shruti Kulkarni 2I
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Re: Order of Ligands/naming

Postby Shruti Kulkarni 2I » Sat Dec 05, 2020 7:14 pm

You would name the ligands in alphabetical order, not including the prefixes, and then put the transition metal at the end, followed by whatever was not in the brackets.

Mingzi Yang 1E
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Re: Order of Ligands/naming

Postby Mingzi Yang 1E » Sat Dec 05, 2020 8:52 pm

If there are multiple ligands, name them based on their alphabetical order.

Reese_Gover2K
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Re: Order of Ligands/naming

Postby Reese_Gover2K » Sun Dec 06, 2020 11:19 am

As everyone else is saying, put the ligands in alphabetical order (excluding prefixes) and then add the transition metal at the end.

LeanneBagood_2F
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Re: Order of Ligands/naming

Postby LeanneBagood_2F » Sun Dec 06, 2020 1:03 pm

What about when you're presented with the names+prefixes already and you have to find the opposite?
Like, does the order you write the ligands/formulas in the square brackets matter?

Pranav Daggubati 3C
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Re: Order of Ligands/naming

Postby Pranav Daggubati 3C » Sun Dec 06, 2020 1:06 pm

Alphabetical order without taking prefixes into account.

Charlotte Adams 1A
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Re: Order of Ligands/naming

Postby Charlotte Adams 1A » Sun Dec 06, 2020 1:31 pm

LeanneBagood_2E wrote:What about when you're presented with the names+prefixes already and you have to find the opposite?
Like, does the order you write the ligands/formulas in the square brackets matter?

My TA said that it doesn't but I think you would just do it alphabetically.

jasonfarrales3D
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Re: Order of Ligands/naming

Postby jasonfarrales3D » Sun Dec 06, 2020 3:10 pm

When writing the formula for a coordinate compound, you should always arrange the ligands by their name, without their prefix, in alphabetical order.

Zainab Jamali 1H
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Re: Order of Ligands/naming

Postby Zainab Jamali 1H » Sun Dec 06, 2020 3:10 pm

Ligands are listed in alphabetical order by the first letter of the ligand (not the numerical prefix). Hope this helps!

Will Skinner
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Re: Order of Ligands/naming

Postby Will Skinner » Sun Dec 06, 2020 3:12 pm

I believe the order is alphabetical.

Namratha Gujje
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Re: Order of Ligands/naming

Postby Namratha Gujje » Sun Dec 06, 2020 3:29 pm

You would name them in alphabetical order :)

Lilly Catarozoli 1B
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Re: Order of Ligands/naming

Postby Lilly Catarozoli 1B » Sun Dec 06, 2020 3:30 pm

The ligands are written in alphabetical order, but excluding the prefixes. Then, add the transition metal at the end. Hope this helps!

Daniela Santana 2L
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Re: Order of Ligands/naming

Postby Daniela Santana 2L » Sun Dec 06, 2020 4:26 pm

Hi, you would arrange the ligands in alphabetical order. Remember to ignore the prefixes while doing this and to focus only on the actual name of the ligand.

Brianna Chen 3F
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Re: Order of Ligands/naming

Postby Brianna Chen 3F » Sun Dec 06, 2020 5:14 pm

You would arrange the ligands in alphabetical order. When arranging the ligands in alphabetical order, you do not consider the prefix.

Kat Stahl 2K
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Re: Order of Ligands/naming

Postby Kat Stahl 2K » Sun Dec 06, 2020 5:16 pm

When writing the name you arrange them in alphabetical order (not including prefixes). When you are writing the formula my TA told us that it does not matter what order you put them in the brackets.

Chudi Onyedika 3A
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Re: Order of Ligands/naming

Postby Chudi Onyedika 3A » Sun Dec 06, 2020 8:18 pm

You would place in alphabetical order then put the TM

Jayasree Peri 2J
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Re: Order of Ligands/naming

Postby Jayasree Peri 2J » Sun Dec 06, 2020 8:20 pm

If you're talking about the actual compound (as in, with the actual ions), I don't think it matters what order you put them in as long as you have the right ligands. Either way you write it, it should still be the same compound. Plus, the final is multiple choice so hopefully this won't be a problem.

LovepreetSran_3H
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Re: Order of Ligands/naming

Postby LovepreetSran_3H » Sun Dec 06, 2020 8:23 pm

You would arrange the ligands in alphabetical order.

Ashley Kim 3H
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Re: Order of Ligands/naming

Postby Ashley Kim 3H » Sun Dec 06, 2020 8:25 pm

Ligands are simply ordered in alphabetical order!

SophiaJenny3I
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Re: Order of Ligands/naming

Postby SophiaJenny3I » Sun Dec 06, 2020 8:29 pm

Hi! This is more in general for coordination compounds, but here's a resource that has been super helpful that is on Dr. Lavelle's website: https://lavelle.chem.ucla.edu/wp-conten ... pounds.pdf
Hope this helps!

derickngo3d
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Re: Order of Ligands/naming

Postby derickngo3d » Sun Dec 06, 2020 8:30 pm

The ligands go in alphabetical order.

Brian Nguyen 2I
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Re: Order of Ligands/naming

Postby Brian Nguyen 2I » Sun Dec 06, 2020 9:45 pm

You order based on the actual ligand name, not by prefix. Let's say we had tetraammine and dichloro. Dichloro would not go before tetraammine because ammine comes before chloro alphabetically.

Jose Miguel Conste 3H
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Re: Order of Ligands/naming

Postby Jose Miguel Conste 3H » Sun Dec 06, 2020 10:23 pm

it goes by alphabetical order, and literally by alphabetical order of the ions, so other examples were Co(NH3)3CL3, therefore since ammine is A and chlorine is C, it is first ammine triamminetrichlorocobalt(III)

Andy Hernandez
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Re: Order of Ligands/naming

Postby Andy Hernandez » Sun Dec 06, 2020 11:02 pm

Goes in alphabetical order, excluding prefix.

joshtully
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Re: Order of Ligands/naming

Postby joshtully » Sun Dec 06, 2020 11:33 pm

It goes in alphabetical order, without prefixes.


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