Polyoxometalate driven dendrite-free zinc electrodes with synergistic effects of cation and anion cluster regulation

Dendrite-free Zn anodes are achieved by using the highly efficient electrolyte additives based on polyoxometalate. Both of the anions and cations of polyoxometalate play important roles in inhibiting the growth Zn dendrites.

Theoretical study of the dissociative photodetachment dynamics of the hydrated superoxide anion cluster

The dissociative photodetachment of the hydrated superoxide anion cluster, O2−·H2O + hν → O2 + H2O + e−, is theoretically investigated using path-integral and ring-polymer molecular dynamics simulation methods, which...

The Geometry of Higher-Dimensional Multi-Shell Clusters With Common Center and Different Centers

In this article, it is shown that the dimension of a metal skeleton of giant palladium cluster, containing 561 atoms in five shells, is 8. The claims of some authors that the palladium cluster in this case is an E8 lattice are groundless. The internal geometry of multi-shell metal clusters with ligands and core was investigated. It is proved that the multi-shell clusters with common center and different centers have a higher dimension. Clusters with ligands and a structural unit octahedron exist with different metals in the core. A spatial image of the cobalt tetra-anion cluster is presented. It is proved that its dimension is 5. It is considered homo-element metal cycles with ligands. For example, a spatial image of the three nuclear carbonyls of ruthenium and osmium it is build. It was proved that the ligands in the three nuclear carbonyls of ruthenium and osmium do not form a ligand polyhedron, as was previously assumed. The construction of cluster in this case can be divided into two polytopes dimension of 4.

A Practical Method for Regioselective 5′-O-tert-Butyldimethylsilyl Deprotection of Persilylated Nucleosides by Methanolic Phosphomolybdic Acid

In nucleoside/nucleotide chemistry, the regioselective cleavage of 5′-O-TBS groups of persilylated nucleosides is a desired approach for structural functionalization at the 5′-position. However, efficient and practical methods for this purpose are still limited. In our research, we found that homogeneous methanolic phosphomolybdic acid (PMA) efficiently catalyzes the regioselective deprotection of 5′-O-TBS groups of a diversity of persilylated nucleoside substrates and can be applied in practical synthesis at scales of up to 15 g. 31P NMR results indicated that an anion cluster forms and the Lewis acidity of homogeneous PMA is organic-solvent dependent. The efficacy and pronounced regioselectivity of methanolic PMA occurs as a result of a lowering of the Lewis acid strength upon solvation of the molybdophosphate anions.

Liberation of three dihydrogens from two ethene molecules as mediated by the tantalum nitride anion cluster Ta3N2− at room temperature

The full dehydrogenation of C2H4 by gas-phase anions Ta3N2− as well as the structure and reactivity of the M–N–C cluster is reported for the first time.