Cu Nb2 O6 Norwig J, Weitzel H, Paulus H, Lautenschlaeger G, Rodriguez-Carvajal J, Fuess H Journal of Solid State Chemistry 115 (1995) 476-483 Structural relations in mixed oxides Cux Zn1-x Nb2 O6 _cod_database_code 1006090 _database_code_amcsd 0013854 5.0064 14.1733 5.7615 90 91.672 90 P2_1/c atom x y z Cu1 .2502 .0002 .3420 Nb1 .7370 .1607 .2037 Nb2 .2353 .1615 .8466 O1 .0627 .0965 .1378 O2 .5737 .0781 .4009 O3 .4037 .2451 .1448 O4 .9002 .2448 .9086 O5 .5560 .0969 .9229 O6 .0643 .0799 .6519