Synthesis, Crystal and Electronic Structures, and Electrical Properties of the Fifth Member of the Rb(MoS)(MoS) Series: RbMoS, an Atypical Reduced Molybdenum Sulfide Containing Mo and Mo Clusters.

The new compound RbMoS has been synthesized as single crystals by a solid-state reaction in a sealed molybdenum crucible at 1500 °C. It constitutes the fifth member of the homologous series of the trigonal (space group 3̅) compounds Rb(MoS)(MoS). Consequently, its crystal structure is based on an equal mixture of MoS and MoS cluster units interlinked through Mo-S bonds with the Rb cations localized in the voids between the MoS and MoS units.

Synthesis, Crystal Structure, and Liquid Exfoliation of Layered Lanthanide Sulfides KLnCuS (Ln = La, Ce, Pr, Nd, Sm).

Among the great amount of known lanthanide nanoparticles, reports devoted to chalcogenide ones are deficient. The properties of such nanoparticles remain almost unknown due to the lack of simple and proper synthetic methods avoiding hydrolysis and allowing preparation of oxygen-free lanthanide nanoparticles. A liquid exfoliation method was used to select the optimum strategy for the preparation of quaternary lanthanide sulfide nanoparticles.

Density-functional tight-binding approach for metal clusters, nanoparticles, surfaces and bulk: application to silver and gold.

Density-functional based tight-binding (DFTB) is an efficient quantum mechanical method that can describe a variety of systems, going from organic and inorganic compounds to metallic and hybrid materials. The present topical review addresses the ability and performance of DFTB to investigate energetic, structural, spectroscopic and dynamical properties of gold and silver materials. After a brief overview of the theoretical basis of DFTB, its parametrization and its transferability, we report its past and recent applications to gold and silver systems, including small clusters, nanoparticles, bulk and surfaces, bare and interacting with various organic and inorganic compounds.