12AX7
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Chlorate as a Ligand
- Any thoughts? It has a lone pair.
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JohnWW
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Unlikely, - for (a) steric reasons, (b) the electron-drawing power of the three O atoms, and (c) its lone pair being quite tightly bonded. BH3, which
would overcome the steric factor as a ligand, is liable to be explosively oxidized by Cl03-. Another strong Lewis acid is BF3, which would overcome
this liability, but it would introduce steric strain.
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12AX7
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Ah yes, that sounds plausible.
Lewis acids aren't something I've covered in school, FWIW.
How about a strong non-oxidizable Lewis acid like FeCl3 or AlCl3? I don't know how strength compares to BH3/BF3... Meh, Al would probably rather
have the oxygen atoms!
Tim
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guy
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Of course it can be a ligand. But whether or not if forms a ligand is relative. For example, should [Fe(H2O)6]3+ lose its water to bond with
chlorate? Probably not. But thats only because the H2O is better ligand. But theoretically anything with lone pairs can be a ligand.
For example, nitrates, you would never think of as a ligand but in some certain, very hard lewis acids like Ce4+, it will form a nitrato complex.
http://en.wikipedia.org/wiki/Ammonium_cerium(IV)_nitrate
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DerAlte
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12AX7 - now that rings a bell to an oldie like me! It was a double triode, I believe. Sorry to be off topic...
DerAlte
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Dr. Beaker
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in clorate you can say each oxygen bares 1/3 of the negative charge. the lone pair of clorine, and those of oxygens are expected to be firmly held by
their atoms, i.e, clorate is a crapy sigma donor. however, the Cl-O anti bonding pi orbital may accept e- density from an electron reach metal, i.e a
good pi acceptor. Cl may also utilize its 3d orbitals for that purpose.
the chlorate however is likely to participate in redox reactions with these electron reach metals...
[Edited on 15-5-2007 by Dr. Beaker]
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