A single crystal structure ofCs2NaLa(NO )6 and powder determination ofCs NaNd­(N02)6 and Rb~NaY(N02)6 show that these compounds ~ave the lanthanoid ion oxygen coorainated and the soidum Ion nitrogen coordinated in an inverse A2A'M(N02)6 structure. La-o = 2.82 A, Na = 2.50 A CS-O = 3.33 A, Rb-Q = 3.23 A. There is no evidence for the existence of strong complex ions in this structure. 


J C BARNES ,K A RASOUL ,P HARKINS ,