Distortion of MoS2 host layers in intercalation compounds with various guest species: correlation with charge transfer

The MoS2 host layers in various intercalation compounds freshly prepared fr om single-layer dispersions are substantially distorted compared to those i n parent crystalline 2H-MoS2. The coordination number for the Mo-Mo sphere (d similar to 3.2 Angstrom) obtained from Mo K-edge EXAFS data can be used as a convenient parameter to estimate qualitatively the degree of distortio n, which is shown to correlate fairly with the residual negative charge kep t by the host layers. (C) 2000 Elsevier Science B.V. All rights reserved.