Downeyite Stahl K, Legros J P, Galy J Zeitschrift fur Kristallographie 202 (1992) 99-107 The crystal structure of SeO2 at 139 and 286 K Note: T = 286 K Locality: synthetic _database_code_amcsd 0011028 8.3622 8.3622 5.0612 90 90 90 P4_2/mbc atom x y z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Se .13374 .21019 0 .950 .00338 .00400 .00770 .00013 0 0 O1 .13802 .36198 .25 1.35 .00575 .00575 .00808 .00168 .0013 .0013 O2 -.05710 .17507 0 1.63 .00381 .00725 .01744 -.00096 0 0