Preparation and Crystal Structures of Some A^IVB_𝟐^IIO_𝟒 Compounds: Powder X-Ray Diffraction and Rietveld Analysis

Table 1

Crystal and refinement data of Cd₂SnO₄.

Empirical formula: Cd2SnO4
Chemical formula: Cd3.58Sn1.78O8.05
Formula weight: 741.99
Wavelength: 𝐾𝛼1 = 1.54060 Å; 𝐾𝛼2 = 1.5444 Å
Temperature: 300 K
Crystal system: orthorhombic
Space group: Pbam (55)	𝑍=1
𝑎=5.568(2) Å	𝛼=𝛽=𝛾=90^∘
𝑏=9.894(4) Å
𝑐=3.193(12) Å
𝑉=175.96(10) Å^3
𝐷𝑥 = 7.002 g/cm^3
No. of reflections used = 394
2𝜃min=10.00^∘, 2𝜃max=140.00^∘
𝑅𝑝=0.105
𝑅𝑤𝑝=0.145
𝑅exp=0.155
𝑅=0.0407
Reduced 𝜒^2=0.867
𝑆=0.93
(Δ/𝜎)max  = 0.02
No. of parameters = 82
Least squares matrix: full
No. of cycles = 124
Crystallite size = 156.73 nm
Strain = 0.094×10^−3