Crystal Structure of ?

Id7203815
Chemical name ?
a (Å)4.33653
b (Å)4.33653
c (Å)11.10471
α (°)90.00000
β (°)90.00000
γ (°)120.00000
V (Å3)180.852
Space groupR -3 m :H
Publication: Journal of Materials Chemistry (2005) 15, 34 3525