Crystal Structure of ?

Id1517481
Chemical name ?
a (Å)26.0818(13)
b (Å)26.0818
c (Å)6.8783(6)
α (°)90.0
β (°)90.0
γ (°)120.0
V (Å3)4052.2(4)
Space groupR -3 :H
Temperature (K)298