P3PrZn3
Nientiedt, A.T.Jeitschko, W.
Journal of Solid State Chemistry (1999) 146, 478-483
a=4.038Å b=4.038Å c=19.942Å
α=90° β=90° γ=120°
Cd3P3Pr
a=4.265Å b=4.265Å c=20.897Å