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The adsorption of sulphur on clean reconstructed Au{110}-(1×2) surface was studied using density functional theory (DFT) and quantitative low energy electron diffraction (LEED) calculations. The results show that the sulphur atoms form a (4×2) ordered structure which preserves the missing row reconstruction of the clean surface. The sulphur atom is found to adsorb on threefold hollow sites, on the {111} microfacets that border the trenches of the missing rows.