Molybdenum Disulfide in the Poorly Crystalline "Rag" Structure

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Science  16 Mar 1979:
Vol. 203, Issue 4385, pp. 1105-1107
DOI: 10.1126/science.203.4385.1105


Molybdenum disulfide has been prepared in an unusual poorly crystalline form, termed the "rag" structure, consisting of several stacked but highly folded and disordered S-Mo-S layers. This previously unknown structure demonstrates the flexible and macromolecular nature of the layered transition metal dichalcogenides. The determination of this structure provides a basis for understanding its highly broadened x-ray diffraction pattern and relatively low surface area, and is a starting point for optimizing the catalytic and surface properties of molybdenum disulfide.