Intramolecular aurophilic interactions in dinuclear gold(I) complexes with twisted bridging 2,2'-bipyridine ligands.

Elimination of the chloride ion from the [(PPh)AuCl] complex using silver triflate (AgOTf) in the presence of 2,2'-bipyridine Rbpy (the Au : Rbpy molar ratio is 2 : 1) in dichloromethane at room temperature leads to dinuclear gold(I) complexes [(PPhAu)(μ-Rbpy)](OTf) (Rbpy = bpy (1), dbbpy (2), CHObpy (3), 3-COCHbpy (4), 4-COCHbpy (5)) in high yields. The crystal structures for all compounds were determined using X-ray diffraction analysis. In all structures, gold ions are in a typical linear environment, and the bipyridine molecule is twisted, which allows intramolecular aurophilic interactions.

Hydrolysis of Element (White) Phosphorus under the Action of Heterometallic Cubane-Type Cluster {MoPdS}.

Reaction of heterometallic cubane-type cluster complexes-[Mo{Pd(dba)}SCl(dbbpy)]PF, [Mo{Pd(tu)}SCl(dbbpy)]Cl and [Mo{Pd(dba)}S(acac)(py)]PF, where dba-dibenzylideneacetone, dbbpy-4,4'-di--butyl-2,2'-bipyridine, tu-thiourea, acac-acetylacetonate, py-pyridine, with white phosphorus (P) in the presence of water leads to the formation of phosphorous acid HPO as the major product. The crucial role of the Pd atom in the cluster core {MoPdS} has been established in the hydrolytic activation of P molecule. The main intermediate of the process, the cluster complex [Mo{PdP(OH)}SCl(dbbpy)] with coordinated P(OH) molecule and phosphine PH, have been detected by P NMR spectroscopy in the reaction mixture.

WS /MoS Heterostructures through Thermal Treatment of MoS Layers Electrostatically Functionalized with W S Molecular Clusters.

The preparation of 2D stacked layers combining flakes of different nature gives rise to countless numbers of heterostructures where new band alignments, defined at the interfaces, control the electronic properties of the system. Among the large family of 2D/2D heterostructures, the one formed by the combination of the most common semiconducting transition metal dichalcogenides, WS /MoS , has awakened great interest owing to its photovoltaic and photoelectrochemical properties. Solution as well as dry physical methods have been developed to optimize the synthesis of these heterostructures.