  We report on the observation of rich variety of crystallographic phase
formation in RexMo1-xS2 alloy for x < 0.5. For x < 0.23, no low dimensional
super-structural modulation is observed and inter-cation hybridization remains
discrete forming dimers to tetramers with increasing Re concentration. For x >
0.23, super-strutural modulaton is observed. Depending on the Re concentrations
(x = 0.23, 0.32, 0.38 and 0.45) and its distributions, various types of cation
hybridization results in rich variety of low dimensional super-structural
modulation as directly revealed by high resolution transmission electron
microscopy. These layered alloy system may be useful for various energy and
novel device applications.
