Rb2Ge4O9 Goreaud M, Raveau B Acta Crystallographica B32 (1976) 1536-1540 Structure cristalline de Rb2Ge4O9 et Rb2TiGe3O9 de type tetragermanate et etude structurale comparee de germanates en anneaux _cod_database_code 1001001 _database_code_amcsd 0009562 12.08 12.08 9.86 90 90 120 P-3c1 atom x y z Rb1 .0040 .3387 .4303 Ge1 0 0 0 Ge2 1/3 .6666 .4705 Ge3 0 .1755 .75 Ge4 .1500 .4824 .7201 O1 0 .4773 .75 O2 .0724 .1480 .8821 O3 .1190 .3260 .6780 O4 .2496 .5199 .8584 O5 .1832 .5784 .5774