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Topic: Trans-Dichlorobis(ethylenediamine)-Cobalt(iii) ion  (Read 7604 times)

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Offline HunterACS

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Trans-Dichlorobis(ethylenediamine)-Cobalt(iii) ion
« on: December 11, 2010, 10:14:00 PM »
So, I recently ran a PChem experiment with the complex.

I have a PChem question with regards to the inorganic compound, so I figured this would be the correct section to ask.

Does anyone have the literature values associated with the aquation (replacing one of the chlorines with a water ligand) of the complex? I specifically need the Activation Energy and some rate constants for 45, 50, and 55 Centigrade.

http://www.colby.edu/chemistry/PChem/lab/KineticsAquation.pdf is the lab itself. I have my values, but I need standards to compare it to. All of the literature on found on Google scholar, or through my college's library showed "it has been well-studied, widely known" whenever they did like chromium comparisons, but the cobalt is never listed.

Does anyone have access to this information? (while you're at it, I wouldn't mind they synthesis of the complex - I'll have to do that 10 months from now).

Any help would be greatly appreciated.

Offline TheUnfocusedOne

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Re: Trans-Dichlorobis(ethylenediamine)-Cobalt(iii) ion
« Reply #1 on: December 13, 2010, 08:58:09 AM »
I don't have access to journals at my work but this might be helpful:

http://pubs.acs.org/doi/abs/10.1021/j100826a012

Try searching for hydrolysis as well as aquation rates.

You probably won't find an article at exactly the same temperatures that you have listed, but you can use the data you've collect in comparison to the literature and make some solid correlations. I did a similar lab with a Cobalt pentaamine complexe so I know it can be done.
"Like most heavy metals, thallium is highly toxic and should not be used on breakfast cereal"

Offline HunterACS

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Re: Trans-Dichlorobis(ethylenediamine)-Cobalt(iii) ion
« Reply #2 on: December 14, 2010, 12:32:36 AM »
:O Why did this not show up before?

I don't know if I can use it, as it was done in acid, as opposed to pure water. DARN.
Also, the bunch of us made a pact - we don't give her the information, she can't penalize us all.

Offline sjb

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Re: Trans-Dichlorobis(ethylenediamine)-Cobalt(iii) ion
« Reply #3 on: December 14, 2010, 02:53:29 AM »
Could it be in W. L. Jolly, Encounters in Experimental Chemistry, Harcourt, Brace, and Jovanovich, New
York, 1972?

Offline TheUnfocusedOne

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Re: Trans-Dichlorobis(ethylenediamine)-Cobalt(iii) ion
« Reply #4 on: December 14, 2010, 09:34:28 AM »
Also, the bunch of us made a pact - we don't give her the information, she can't penalize us all.

I've been there before  :P

Try reading through it and see if it references any other papers about aquation rates.  Experiments are rarely standalone in the literature, I'm sure that it references similar experiments.

If I'm feeling uber generous later tonight I'll see if I can find my old inorganic binder with all my labs and references in it (never a good idea to toss stuff like that!).
"Like most heavy metals, thallium is highly toxic and should not be used on breakfast cereal"

Offline FreeTheBee

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Re: Trans-Dichlorobis(ethylenediamine)-Cobalt(iii) ion
« Reply #5 on: December 14, 2010, 10:20:34 AM »
Jolly, Encounters in Experimental Chemistry

Lose the comma and a great book title appears  :)

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