%0 Journal Article %T 1,5,6-Triphenyl-8-oxa-7-selena-6-phosphabicyclo[3.2.1]octane-6-selone %A Guoxiong Hua %A Yang Li %A Alexandra M Z Slawin %A J. Derek Woollins %J Acta Crystallographica Section E %D 2008 %I International Union of Crystallography %R 10.1107/s1600536807063945 %X The structure of the title compound, C23H21OPSe2, consists of fused puckered five- and six-membered rings, PSeC2O and C5O, respectively, with a C2O bridgehead. The C5O ring adopts a chair conformation, whilst the C2PSeO ring has an envelope conformation. %U http://scripts.iucr.org/cgi-bin/paper?S1600536807063945