Recent theoretical studies with alkali atoms A* excited to high Rydberg states predicted the existence of ultra-long-range molecular bound states. Such excited dimers have large electric dipole moments which, in combination with their long radiative lifetimes, make them excellent candidates for manipulation in applications. This Letter reports on experimental investigations of the self-broadeni...

Millisecond crystal relaxation has been used to explain anomalous decay in doped alkali halides. We attribute this slowness to Fermi-Pasta-Ulam solitons. Our model exhibits confinement of mechanical energy released by excitation. Extending the model to long times is justified by its relation to solitons, excitations previously proposed to occur in alkali halides. Soliton damping and observation...

The first π-coordination-catalyzed nucleophilic fluorination of unactivated aryl halides has been demonstrated. Chlorobenzene reacts with alkali metal fluorides (CsF, KF) in the presence of a Cp*Ru catalyst at 120-180 °C to give fluorobenzene.

The moving boundary method of electrophoresis has been applied to a study of pituitary extracts and purified protein fractions derived from these extracts. The technique employed was that developed by Tiselius and involved the optical observation of the protein boundaries by Toepler's schlieren method. The present experiments were designed primarily to determine the number of proteins present, ...

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The effects of excess electronic charges transferred from alkali metals to Se atoms on the chain structure in liquid RbxSe1−x for x 0.5 are investigated by means of ab initio molecular-dynamics simulations. It is found that the interaction between Se chains is enhanced by the transferred electrons, and that the average length of Se chains becomes shorter with increasing alkali-metal concentrati...

The iron-molybdenum cofactor of nitrogenase has unprecedented coordination chemistry, including a high-spin iron cluster called the iron-molybdenum cofactor (FeMoco). Thus, understanding the mechanism of nitrogenase challenges coordination chemists to understand the fundamental N2 chemistry of high-spin iron sites. This Account summarizes a series of studies in which we have synthesized a numbe...

The energy independent model pseudopotential (EIMP) formalism, developed in the preceding paper, and Shaw’s optimized model potential (OMP) formalism are applied to first principles calculations of phonon spectra of the alkali metals and AI and of Fermi surface distortions for the alkali metals. Then the applicability of the EIMP formalism for calculating actual physical quantities needed to ch...

First-principles density-functional-theory calculations show that compression of alkali metals stabilizes open structures with localized interstitial electrons which may exhibit a Stoner-type instability towards ferromagnetism. We find ferromagnetic phases of the lithium-IV-type, simple cubic, and simple hexagonal structures in the heavier alkali metals, which may be described as s-band ferroma...