Au(I)...Ag(I) metallophilic interactions between anionic units: theoretical studies on a AuAg(sub 4) square pyramidal arrangement

Article Abstract:

A study was conducted theoretically for the organometallic compound (NBu(sub 4)(sub 2) [Au(3,5-C(sub 6)F(sub 3)Cl(sub 2))(sub 2) Ag(sub 4)(cF(sub 3)CO(sub 2)(sub 5)], whose dianionic part displays a AuAg(sub 4) square pyramidal arrangement based on closed-shell Au(I)...Ag(I) interactions between two monoanionic fragments. The modelsystem [AuPh(sub 2)](super -)...[Ag(sub 4(CO(sub 2)H)(sub 5)](super -) (C1) was choosen from DFT results as an appropriate model for the study of the interactions.

Hartree-Fock approximation

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Two-site adsorption model for the (square root of 3 X square root of 3)-R30 degree dodecanethiolate lattice on Au(111) surfaces

Article Abstract:

The surface structure of the (square root of 3 X square root of 3)-R30 degree dodecanethiolate self-assembled monolayers (SAMs) on Au(111) surfaces, formed from the liquid phase, is analyzed. By considering the length of the hydrocarbon chain and the adsorption time, the two-site model can be used as a tool to describe the controversial results obtained in this experiment.

Monomolecular films, Structure

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Tunable photoluminescence of closed-shell heterobimetallic Au-Ag dicyanide layered systems

Article Abstract:

The excited-state properties of the layered La[Ag(CN)2]3 and La[Au(CN)2]3 systems are examined and compared with mixed-metal systems of varying metal ratios. It is found that theses mixed-metal systems luminesce quite strongly at room temperature at an energy that is tunable and depends ion the Au:Ag stoichiometric ratio.

Science & research, Research, Chemistry, Physical and theoretical, Physical chemistry, Photoluminescence

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