Nb Se3 Hodeau J, Marezio M, Roucau C, Ayroles R, Meerschaut A, Rouxel J, Monceau P Journal of Physics C: Solid State Physics 11 (1978) 4117-4134 Charge density waves in Nb Se3 at 145 K: Crystal structures X-Ray and electron diffraction studies _cod_database_code 1009061 _database_code_amcsd 0016922 9.984 3.4831 15.591 90 109.47 90 P2_1/m atom x y z Nb1 .652 .25 .1177 Nb2 .687 .25 .7946 Nb3 .296 .25 .4611 Se1 .556 .25 .9336 Se2 .17 .25 .9124 Se3 .197 .25 .7617 Se4 .162 .25 .0861 Se5 .178 .25 .277 Se6 .53 .25 .2507 Se7 .915 .25 .5748 Se8 .557 .25 .5939 Se9 .755 .25 .4234