The ion-conducting behaviour of alkali metal ions in ionic solids (M ₆ [ 1 ]· n H ₂ O) resembles that in aqueous solutions; the solid-state conductivities increase in the order of M = Li ⁺ < Na ⁺ < K ⁺ .

In this account, we focus on the stereochemical and chiral behavior of S-bridged multinuclear and metallosupramolecular coordination compounds that are derived from mononuclear metal complexes with cysteine (H2cys) or penicillamine (H2pen). The mononuclear complexes act as versatile metalloligands with amine and/or carboxyl groups, in addition to the thiol groups, as donor sites, allowing them to form a large variety of coordination compounds in combination with additional metal ions. Several chiral elements, such as chiral metal centers, asymmetric bridging sulfur atoms, and molecular and supramolecular helicity, in addition to asymmetric carbon atoms, are created in the resulting molecular and crystal structures, and their absolute configurations are often controlled to produce a single kind of homochiral species. In addition, this metalloligand approach leads to several unique chiral phenomena, such as stimulus-responsive chiral switching/inversion based on geometrical changes in metal centers, highly ... Since the establishment of coordination chemistry by A. Werner, the creation of chiral metal complexes has been one of the most important topics in the field of coordination chemistry. In this account, we focus on the stereochemical and chiral behavior of S-bridged multinuclear and metallosupramolecular compounds that are derived from metalloligands with cysteine or penicillamine.

The heterogeneous catalase-like activity of ionic crystals consisting of Au ^I ₄ Co ^III ₂ complex cations is studied along with their surface morphologies and oxidation states.