Layered compounds assembled from molybdenum disulfide single-layers and alkylammonium cations

Intercalation compounds A(x)MoS(2) have been obtained by restacking aqueous MoS2 dispersions in the presence of A-alkylammonium cations (A = R4N+ or R (CH3)(3)N+). Varying the experimental conditions, the negative charge of th e MoS2 single-layers in the dispersions can be modified, which allows to co ntrol the content and packing geometry of the A guest layers in the resulti ng intercalation compounds. The value of the negative charge kept on the Mo S2, host layers of the intercalation compounds determines the degree of in- layer distortion of their Mo sublattice. (C) 2000 Elsevier Science B.V. All rights reserved.