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How do metals enhance silanol activity?

http://www.chromforum.org/viewtopic.php?t=1506

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How do metals enhance silanol activity?

Posted: Mon Feb 21, 2005 8:55 pm
by Ricardinio
Can any one explain to me how do metals enhance silanol activity of silica-based stationary phases?

Posted: Mon Feb 21, 2005 9:46 pm
by tom jupille
Think of metal cations (postive charge) as pulling electron density back from adjacent silanol oxygens. This makes the silanol hydrogens more weakly bound. Result is a more acidic (lower pKa) silanol.
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