Sapling 1

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jessicasilverstein1F
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Sapling 1

Postby jessicasilverstein1F » Wed Dec 02, 2020 5:17 pm

[Co(NH3)4Cl2]Cl :

Does anyone know how to arrange the ligands in alphabetical order here? Is it based on tetra and di or is it based on ammine and chloro?

Courtney Situ 2B
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Re: Sapling 1

Postby Courtney Situ 2B » Wed Dec 02, 2020 5:27 pm

Hi!

For naming the compound, you arrange the ligand in alphabetical order based on the name, not the prefix. For example, tetraammine would come before dichloro because the A in ammine comes before the C in chloro.

If they give you the name and you have to write out the formula, make sure to write it in alphabetical order based on the chemical symbol as well. That's why the Cl2 comes before the NH3 (because the C is before the N).

Hope this helps!

Ryan Laureano 3I
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Re: Sapling 1

Postby Ryan Laureano 3I » Wed Dec 02, 2020 6:51 pm

When arranging ligands in alphabetical order, you always use the ligand name without the prefix.

Emma Strassner 1J
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Re: Sapling 1

Postby Emma Strassner 1J » Wed Dec 02, 2020 9:25 pm

Hi, naming the compounds like that follows alphabetical order without the prefixes included. You only add in the prefixes after you have determined the order of the ligand names themselves.

Maddie Turk Disc 2J
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Re: Sapling 1

Postby Maddie Turk Disc 2J » Sun Dec 06, 2020 2:50 pm

So why would this be cobaltate and not cobalt at the end

Evelyn Silva 3J
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Re: Sapling 1

Postby Evelyn Silva 3J » Sun Dec 06, 2020 2:58 pm

You should disregard the prefixes when putting the ligands in alphabetical order.

Chanel Mao 3D
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Re: Sapling 1

Postby Chanel Mao 3D » Sun Dec 06, 2020 3:03 pm

Maddie Turk Disc 2C wrote:So why would this be cobaltate and not cobalt at the end


Hi! This would actually just be cobalt at the end instead of cobaltate. You only add the -ate at the end of the metal if the net charge of the complex is negative. Also, don't forget to add the oxidation number in parenthesis after the metal! Hope this helps!

Sameer Chowdhury 3C
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Re: Sapling 1

Postby Sameer Chowdhury 3C » Sun Dec 06, 2020 3:21 pm

In regards to putting things in alphabetical order, first do that for name of each atom or molecular compound, then add prefixes.

Veeda Khan 2E
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Re: Sapling 1

Postby Veeda Khan 2E » Sun Dec 06, 2020 3:37 pm

As everyone said above, its alphabetical not including the prefixes.

Charmaine Ng 2D
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Re: Sapling 1

Postby Charmaine Ng 2D » Sun Dec 06, 2020 4:09 pm

^^ You alphabetize the ligands based on the ligand itself rather than the prefix! Add the prefix after :DD

Daniela Santana 2L
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Re: Sapling 1

Postby Daniela Santana 2L » Sun Dec 06, 2020 4:11 pm

Hi, when naming a compound you ignore the prefixes and base the alphabetical order off of the actual name of the ligand. So in this case you would only consider the first letter in ammine and chloro.

AndrewNguyen_2H
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Re: Sapling 1

Postby AndrewNguyen_2H » Sun Dec 06, 2020 4:12 pm

It's based on the name of the ligand so ammino and chloro.

Yeprem
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Re: Sapling 1

Postby Yeprem » Sun Dec 06, 2020 4:41 pm

Since it is Cl2 for the anion, why is it still named chloride and not chlorine?

Brianna Chen 3F
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Re: Sapling 1

Postby Brianna Chen 3F » Sun Dec 06, 2020 5:23 pm

When naming compounds, you do not consider the prefixes. Therefore, you would only look at ammine and chloro when alphabetizing the name.

Kathy_Li_1H
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Re: Sapling 1

Postby Kathy_Li_1H » Sun Dec 06, 2020 6:30 pm

Hi! The ligands are named in alphabetical order, which doesn't include the prefix but the actual ligand name.

Hannah Lechtzin 1K
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Re: Sapling 1

Postby Hannah Lechtzin 1K » Sun Dec 06, 2020 6:36 pm

Yes! First you should find out what the name for each ligand is without the greek prefix. In this case your ligands are NH3 (ammine) and Cl (chloro), so you'd order them -ammine-chloro. Now you can add in your greek prefixes to get tetraamminedichloro. Last you add in the transition metal, oxidation state, and cation(in front of the compound)/anion(behind the compound).

AlbertGu_2C
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Re: Sapling 1

Postby AlbertGu_2C » Sun Dec 06, 2020 7:00 pm

The ligand's "other name" will take priority in ordering the compounds in alphabetical order. Hope this helps!

Shalyn Kelly 3H
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Re: Sapling 1

Postby Shalyn Kelly 3H » Sun Dec 06, 2020 7:32 pm

Hi! As stated above, you apply alphabetical order to the name of the ligands (ammine, chloro), and then simply add the respective prefixes after (tetra, di).

Emily Jacobo 1C
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Re: Sapling 1

Postby Emily Jacobo 1C » Sun Dec 06, 2020 7:50 pm

I had trouble on this too! It took me a few tries to get sapling #1 right on this weeks homework. Turns out i forgot the 3 at the end. This thread really helped me understand more!

Kaiya_PT_1H
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Re: Sapling 1

Postby Kaiya_PT_1H » Sun Dec 06, 2020 8:39 pm

Was anyone else confused about this thread? for me, the first sapling question was a different formula.

Ruth Rosales 3D
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Re: Sapling 1

Postby Ruth Rosales 3D » Sun Dec 06, 2020 8:44 pm

You don't alphabetize by the prefix, you do it by the ligand. Then you add the prefix.

Hana Sigsbee 3B
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Re: Sapling 1

Postby Hana Sigsbee 3B » Sun Dec 06, 2020 8:51 pm

naming is based on the actual name, not the prefix.

sabrina ghalambor 2J
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Re: Sapling 1

Postby sabrina ghalambor 2J » Sun Dec 06, 2020 9:15 pm

hi! use the original name first, the prefix is irrelevant for the alphabetical naming order.

Logan Wiedemann 3J
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Re: Sapling 1

Postby Logan Wiedemann 3J » Sun Dec 06, 2020 9:27 pm

Use the actual name of the compound first (e.g. ammine) and disregard the prefixes when naming them!!

Brian Nguyen 2I
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Re: Sapling 1

Postby Brian Nguyen 2I » Sun Dec 06, 2020 9:43 pm

It's based on chloro and ammine. Thus, tetraammine would go first and then dichloro.

Melanie Lin 3E
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Re: Sapling 1

Postby Melanie Lin 3E » Sun Dec 06, 2020 9:44 pm

Hi Jessica! When naming coordination compounds, you put the ligands in alphabetical order from their names and not the Greek prefixes so you would put ammine then chlorine. Hope this helps!

Catie Donohue 2K
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Re: Sapling 1

Postby Catie Donohue 2K » Sun Dec 06, 2020 9:49 pm

Hi! Just to clarify, do we never use a Greek prefix for the anion at the end? The solution said that as long as the Roman numeral (III) was included after cobalt the anion would just be called chloride instead of trichloride.

jessicaosuna_1F
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Re: Sapling 1

Postby jessicaosuna_1F » Sun Dec 06, 2020 9:57 pm

Just to clarify in one post because I was kind of confused by this thread:

You have 2 ligands ( ammine and chloro).
You alphabatize them before adding prefixes so that would be aminechloro at this step
Then you add the prefixes so tetraaminedichloro
Next, you add the metal and its oxidation state to the end (tetraaminedichloro cobalt (III)
Lastly you add the anion

This gives you a final solution of:

tetraaminedichloro cobalt (III) chloride.

Jose Miguel Conste 3H
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Re: Sapling 1

Postby Jose Miguel Conste 3H » Sun Dec 06, 2020 10:20 pm

naming is based on the literal name of the compounds so because ammine is A and Chloride is C, ammine comes first, then chloride

Ariana Flores 3F
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Re: Sapling 1

Postby Ariana Flores 3F » Sun Dec 06, 2020 10:41 pm

Hey just to clarify, the final answer is tetraamminedichloro cobalt (III) chloride. I spelled the ammine part wrong and it said it was wrong three times, I was so confused why.

Andy Hernandez
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Re: Sapling 1

Postby Andy Hernandez » Sun Dec 06, 2020 10:48 pm

Use name of the compound, ammine, first and disregard the prefixes when naming

joshtully
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Re: Sapling 1

Postby joshtully » Sun Dec 06, 2020 11:35 pm

Make sure you exclude the prefix when arranging in alphabetical order.

Hannah Lechtzin 1K
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Re: Sapling 1

Postby Hannah Lechtzin 1K » Fri Dec 11, 2020 10:05 am

Although you'll have greek prefixes in front of ammine or chloro, it is based on the name of the ligand. So...you'd organize them prefix-ammine, prefix-chloro

LeahSWM 2E
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Re: Sapling 1

Postby LeahSWM 2E » Fri Dec 11, 2020 10:53 am

yup, you arrange it by the ligand name without the prefix.

DPatel_2L
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Re: Sapling 1

Postby DPatel_2L » Fri Dec 11, 2020 7:55 pm

Exclude the prefix when you are arranging it.


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