Synthesis and Crystal Structure of Na2CaP2O7.

Abstract Na 2 CaP 2 O 7 has been prepared in single crystal form by fusion techniques. The single crystal structure: a = 5.361(3), b = 7.029(3), c = 8.743(4)A, α = 69.40(2), β = 89.02(3), γ = 88.78(4) °, V = 308.5(3)A 3 , space group P1 bar, Z = 2, D calc = 2.799 mg/m 3 , R/R w = 0.0445/0.0554 for 1434 observed reflections (F>4.0σ(F), shows a solid state form similar to that of K 2 SrP 2 O 7 , K 2 MnP 2 O 7 and KaCdP 2 O 7 .