Nb O5 Ti Tl Rebbah A, Desgardin G, Raveau B Journal of Solid State Chemistry 31 (1980) 321-328 Nonstoichiometric oxides with a layer structure: The compounds A1-x(Ti1-xM1+x)O5 _cod_database_code 1001085 _database_code_amcsd 0013377 6.456 3.806 18.844 90 90 90 Pnma atom x y z occ Tl1 .773 .25 .8024 Ti1 .313 .25 .0339 .8 Nb1 .313 .25 .0339 .2 Ti2 .766 .25 .1082 .2 Nb2 .766 .25 .1082 .8 O1 .059 .25 .069 O2 .645 .25 .00112 O3 .469 .25 .119 O4 .823 .25 .204 O5 .230 .25 .920