Retgersite McIntyre G J, Ptasiewicz-Bak H, Olovsson I Acta Crystallographica B46 (1990) 27-39 Bonding deformation and superposition effects in the electron density of tetragonal nickel sulfate hexadeuterate NiSO4*6D2O Sample: X-ray refinement _database_code_amcsd 0009838 6.7803 6.7803 18.288 90 90 90 P4_32_12 atom x y z Uiso Ni -.21039 -.21039 0 .0146 S -.70910 -.70910 0 .0167 O4 -.61965 .37988 -.06604 .0318 O5 -.92339 .32770 -.00050 .0287 ODw1 -.17284 .04673 -.05278 .0301 ODw2 -.47011 -.24399 -.05617 .0225 ODw3 -.06596 .64363 -.08493 .0213