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Topic: complexes  (Read 4428 times)

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Offline chantiella

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complexes
« on: May 21, 2011, 09:26:24 AM »
what kind complex does form in this reaction- FeCl3+KSCN+H2O :rarrow: ? I used to think it is [Fe(SCN)(H2O)3]Cl2 but now I know it is wrong..
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Offline DevaDevil

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Re: complexes
« Reply #1 on: May 24, 2011, 03:44:15 PM »
are you sure both thiocyanide AND chloride are present in the complex?
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Offline BluePill

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Re: complexes
« Reply #2 on: June 13, 2011, 05:51:22 AM »
I'm thinking [Fe(SCN)3H2O] and KCl
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Offline AWK

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Re: complexes
« Reply #3 on: June 13, 2011, 07:21:55 AM »
It depends on amount of KSCN. (up to K2[Fe(SCN)5H2O])
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Offline cheese (MSW)

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Re: complexes
« Reply #4 on: August 19, 2011, 12:52:35 AM »
"The blood-red colour produced by mixing aqueous solutions of Fe(III) and SCN^- (and which provides a well-known test for Fe(III)) is largely due to
[Fe(SCN)(H2O)5]^2+ but, in addition to this, the simple salt Fe(SCN)3 and salts of complexes such as [Fe(SCN)4]^- and Fe(SCN)6]^3- can also
be isolated."
N. N. Greenwood, A. Earnshaw, Chemistry of the Elements 2nd ed. (1997) p 1090.
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