RbI
Ahtee M
Annales Academiae Scientiarum Fennicae Series A6: Physica 313 (1969) 1-11
Lattice constants of some binary alkali halide solid solutions.
_database_code_amcsd 0011999
7.3291 7.3291 7.3291 90 90 90 Fm3m
atom  x  y  z
Rb    0  0  0
I    .5 .5 .5