Synthesis and Rietveld crystal structure refinement of mackinawite, tetragonal FeS
نویسنده
چکیده
Mackinawite,tetragonal FeS, has been synthesised by reacting iron with Na2S solutions. A Rietveld structure refinement of X-ray powder diffractipn data, recorded using X-rays monochromated from synchrotron radiationwith a wavelength of 0.6023 A, has been performed. The structure has been refined in the tetragonal sJ'.!lcegroup, P4/nmm, and has the following cell parameters: a = 3.6735(4), c = 5.0328(7) A, V = 67.914(24) A3.Our refinement shows that the FeS4 tetrahedron in mackinawite is almost perfectly regular, with a much smallerdistortion than has been previously reported. An improved X-ray diffraction data set is provided.
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