crystal data
This compound is triclinic, probably isostructural with Rb2MnCl4.2H2O, the space group is P1 or P, a = 6.50 ± 0.04, b = 6.99 ± 0.04, c = 5.58 ± 0.03 Å, α = 92.8 ± 0.1°, β = 97.2 ± 0.1°, γ = 65.4 ± 0.1°, V = 228.76 ± 0.06 Å3, Z = 1, Dm = 2.94 ± 0.03, Dx = 2.96 g cm−3. The precession method and Zr-filtered Mo Kα radiation (γ = 0.7107 Å) were used. The description of the specimen preparation, chemical analysis, morphology and comparison with similar substances have been deposited.