Intercalation of large cluster cations in TaS2

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Abstract
Optimum conditions for the formation of stable dispersions of NaxTaS2 in N-methylformamide–water mixtures have been determined. Under appropriate conditions, the addition of large guest cations to these dispersions results in instantaneous flocculation and the formation of ordered intercalation compounds. The method has been used to prepare intercalation compounds with cobaltocenium cations, Al and Ga polyoxycations, and a large iron–sulfur cluster cation. Powder X-ray diffraction data from oriented films of the samples were used to obtain one-dimensional projections of the electron density perpendicular to the layers. These electron-density maps provided information on the orientation of the guest species in the interlamellar space.

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