Crystal Structure of ?

Id4338065
Chemical name ?
a (Å)4.26514(5)
b (Å)4.26514(5)
c (Å)19.7184(2)
α (°)90.00000
β (°)90.00000
γ (°)90.00000
V (Å3)358.706(7)
Space groupI 4/m m m
Temperature (K)298(2)