The structure of strontium dithionate tetrahydrate
Abstract
The crystal structure of strontium dithionate tetra-hydrate, space group P62, a = 6.32 ± 0.02 Å, c = 19.29 ± 0.03 Å, Z = 3, has been determined by Patterson, Fourier, and minimum residual refinement methods. The intensity measurements were recorded on a Picker automatic four-circle x-ray diffractometer using MoKα radiation, and a twinned crystal. The S–S bond length is 2.15 ± 0.03 Å and the mean S–O bond length is 1.41 Å. Each strontium ion is bound to eight oxygen atoms at a mean distance of 2.58 ± 0.04 Å. Only two of the three independent oxygen atoms of the dithionate ion are coordinated. There appears to be no hydrogen bonding. The value of the residual for all reflections having 2θ ≤ 40°, R = 0.119.
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