Crystal structure of (Li0.5K0.5)2C03 by neutron powder diffraction analysis
نویسندگان
چکیده
The crystal structure of (Li0.5K0.5)2C03 was determined by neutron powder diffraction. A final weighted R-factor of 4.54% was obtained for the refinement of 2373 reflections by the Rietveld method from a sample synthesized using 7Li2CO3 and K2CO3 (99.9% pure). Slight distortion of the CO$units in the monoclinic cell was observed; the O( 1)-C-0(2) angle and CO(3) length are larger than those for the other C 0 bonds and 0 -C-0 angles. These localstructure characteristics can be explained by the difference in the ionic size of Li+ and K+, and the different electrostatic interactions between the cations and CO32units.
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