Crystal Structure of ?

Id4330454
Chemical name ?
a (Å)4.08821(3)
b (Å)4.08821(3)
c (Å)19.1179(2)
α (°)90.00000
β (°)90.00000
γ (°)90.00000
V (Å3)319.526(5)
Space groupI 4/m m m
Temperature (K)298(2)