Group I and II metal amidoboranes have been identified as one of the promising families of materials for efficient H(2) storage. However, the underlying mechanism of the dehydrogenation of these materials is not well understood. Thus, the mechanisms and kinetics of H(2) release in metal amidoboranes are investigated using high level ab initio calculations and kinetic simulations. The metal play...

Nanomaterials are increasingly used or tested in a wide variety of fields in materials and biological sciences owing to their unique size-dependent physicochemical properties. In particular, silver nanoparticles (AgNPs) have been intensively studied for applications as conductive materials1,2) and catalysts3,4). In addition, the use of Ag-NPs is becoming more widespread in medicine and related ...

Labile metal complexes have a useful coordination bond; which is weaker than a covalent C–C bond and is reversibly and dynamically formed and dissociated. Such labile metal complexes also can be used to construct chiral shapes and offer dynamic conversion of chiral molecular shapes in response to external stimuli. This review provides recent examples of chirality induction and describes the dyn...

In complexes of the transition metals containing clusters of metal atoms the cobalt-cobalt bond lengths are almost always within 1 pm of the single-bond value 246 pm given by the enneacovalent radius of cobalt, whereas most of the observed iron-iron bond lengths are significantly larger than the single-bond value 248 pm, the mean being 264 pm, which corresponds to a half-bond. A simple discussi...

Arnd Vogler* und Horst Kunkely Universität Regensburg, Institut für Anorganische Chemie, D-8400 Regensburg Z . Naturforsch. 44b, 132-134 (1989); eingegangen am 8. September/10. Oktober 1988 Photolysis, Meta l -Meta l Bond, Charge Transfer Excitation The polar metal-metal bond of [ P h 3 P A u I C o _ I ( C O ) 4 ] was cleaved photochemically by metal to metal ( C o 1 —» A u + I ) charge transfe...

STATEMENT OF THE PROBLEM The success of metal- ceramic- restorations (MCR) depends on the presence of strong bond between porcelain and metal substructure. PURPOSE The purpose of this study was to evaluate the effect of hot pressing technique on the bond strength of a metal-porcelain composite in comparison to layering technique. MATERIALS AND METHOD Thirty Nickel-Chromium specimens were pr...

Using ab initio methods, we examine the electronic structure of substrate-supported metal films. We predict a coexistence between charge-transfer valence-bond states and bandlike metallic states. The role of the support composition in determining the balance of bond and band states is elucidated for Pt on Aland O-terminated -Al2O3, and we reveal how this coexistence evolves with metal film thic...