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Topic: complexes  (Read 8250 times)

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Offline Morphic flip

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complexes
« on: May 06, 2006, 07:09:13 AM »
I can`t write down other complexes of Co(py)2(SCN)2 like I have just written here.
It`s polymer isomers I need of this molecule, but only with one Co atom.
I can`t see how to express the isomers.

Offline AWK

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Re: complexes
« Reply #1 on: May 08, 2006, 03:10:14 AM »
Your complex is very like tetrahedral, and rather have no isomers. The only possibility is coordination by N or S atoms
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Offline Morphic flip

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Re: complexes
« Reply #2 on: May 08, 2006, 04:07:01 AM »
I was thinking thiocyanate ligand can bond by either the N or S, how would I write/express that?
Or is it the same as I`ve put?
Is there no other way`s of expressing the example I have given?

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Offline Morphic flip

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Re: complexes
« Reply #4 on: May 08, 2006, 05:03:38 AM »
Thank`s.

Offline Will

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Re: complexes
« Reply #5 on: May 09, 2006, 08:32:05 AM »
I was thinking thiocyanate ligand can bond by either the N or S, how would I write/express that?
Or is it the same as I`ve put?
Is there no other way`s of expressing the example I have given?

In a thiocyanate ligand- it always bonds to the S (-SCN), only in isothiocyanate ligands does it bond to the N (-N=C=S).

Offline AWK

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Re: complexes
« Reply #6 on: May 09, 2006, 09:58:08 AM »
Strictly speaking - will17 is absolutely right - I meant that using thiocyanate we can obtain a mixed complex containing both: thiocyanate ligands and isothiocyanate ligands (thiocyanate but bonded to N atom)
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Offline Morphic flip

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Re: complexes
« Reply #7 on: May 09, 2006, 10:31:59 AM »
Hmm, interesting, thank`s for the info.

Offline AWK

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Re: complexes
« Reply #8 on: May 11, 2006, 09:04:23 AM »
I searched CSD database. Such a complex axist, ist polymeric with octahedral environment of Co with two CoS bond and complexe with two CO-N donating bonds.
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Offline AWK

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Re: complexes
« Reply #9 on: May 11, 2006, 09:07:27 AM »
I searched CSD database. Such a complex is known and polymeric. Coballt forms two CoS bond, two Co-N(py) datyve bonds, ans two Co-NCS dative bonds with coordination number 6 (octahedral complex)
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Offline Morphic flip

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Re: complexes
« Reply #10 on: May 16, 2006, 04:38:35 AM »
What free download etc did you use to check?
Regards.

Offline AWK

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Re: complexes
« Reply #11 on: May 16, 2006, 05:29:09 AM »
Reference: M.A.Porai-Koshits, G.N.Tishchenko (1960)
Kristallografiya(Russ.)(Crystallogr.Rep.) ,4,239

catena-Cobalt(ii) thiocyanate-pyridine
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Offline Morphic flip

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Re: complexes
« Reply #12 on: May 16, 2006, 09:55:52 AM »
Thank`s.

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