D2Ga2Sr
Bjoerling, T.Haeussermann, U.
Journal of the American Chemical Society (2006) 128, 817-824
a=4.3932Å b=4.3932Å c=4.699Å
α=90° β=90° γ=120°
BaD2Ga2
a=4.5286Å b=4.5286Å c=4.8991Å