Rb 
 1.0000000000000000
     5.4877573842349250   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    5.4877573842349250    0.0000000000000000
     0.0000000000000000    0.0000000000000000    5.4877573842349250
 Rb 
   2
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  2.7438786921174629  2.7438786921174629  2.7438786921174629   T   T   T