Abstract
4,4-Bis(trifluoromethyl)-2,2,2-triphenyl-3-(triphenylphosphoranylidene)-1,2-oxaphosphetane (I) is monoclinic, space group P21/n with a= 19·72, b= 11·54, c= 16·98 Å, and β= 117° 45′. The compound is produced from the reaction of Ph3P:C:PPh3 and (CF3)2CO and contains a planar 4-membered heterocyclic ring system with a long P–O bond of 2·01 Å. The bonds from the phosphorus atoms to the heterocyclic ring carbon atom are essentially equal (1·76, 1·75 Å). The final R-factor for 1708 three dimensional reflexions is 0·123.
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More From: Journal of the Chemical Society A: Inorganic, Physical, Theoretical
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