Structure de Ln2(PO3H)3.H2O (Ln = Pr, Nd)

Dipraseodymium triphosphite monohydrate, Pr 2 (PO 3 H) 3 .H 2 O, M r =539.8, monoclinic,P2 1 /n, a=9.620 (2), b=8.005 (1), c=13.119 (2) A, β=108.98 (1) o , V x =955.4 (3) A 3 , Z=4, D m =3.72 (1), D x =3.754 Mg m -3 , λ(Mo Kα)=0.71073 A, μ=10.68 mm -1 , F(000)= 992, T=293 K, R=0.025 for 1947 independent reflections. Dineodymium triphosphite monohydrate, Nd 2 (PO 3 H) 3 .H 2 O, M r =546.4, monoclinic, P2 1 /n, a=9.581 (2), b=7.980 (2), c=13.056 (3)A, β=108.95 (1)°, V=944.2 (4) A 3 , Z=4, D m =3.81(1, D x =3.845 Mgm -3 , λ(Mo Kα)=0.71073 A, μ=11.51 mm -1 , F(000)=1000, T=293K, R=0.0305 for 1992 independent reflections