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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: franz on May 29, 2012, 03:50:21 PM

Title: PCy3
Post by: franz on May 29, 2012, 03:50:21 PM
Dear chemicals

I ask help on how to oxidize PCy3.

soon
Title: Re: PCy3
Post by: sjb on May 29, 2012, 05:26:41 PM
Dear chemicals

I ask help on how to oxidize PCy3.

soon

Oxidise it to what?
Title: Re: PCy3
Post by: cheese (MSW) on May 29, 2012, 09:00:44 PM
PCy3 will convert immediately to Cy3P=O on exposure to air [STREM says it is just air-sensitive; not pyrophoric unlike PMe3].  The oxide is much less soluble in hexanes: so you devise a procedure using Schlenk techniques.
Title: Re: PCy3
Post by: cheese (MSW) on May 30, 2012, 06:19:52 PM
PS: Follow by IR Me3P=O ν(P=O) = 1176; Ph33P=O ν(P=O) = 1190 cm^-1;
Cy3P=O should be be air-stable (Ph3PO is a rock!) Recrystallized from minimum
CH2Cl2/hexanes (freezer).
Title: Re: PCy3
Post by: franz on June 08, 2012, 05:21:41 AM
Thank you so much cheese (MSW)

then I would be in the box PCy3 oxide that does not rust, so I have to separate them by a recrystallization true? . Lacking CH2Cl2/hexanes (freezer) as an alternative to what can I use?