Zero electron kinetic energy (ZEKE) spectroscopy and photodetachment cross section measurements have been carried out on Au;. The transition frequencies of ZEKE, peaks and resonance peaks are nearly identical, consistent with the proposal that the excited negative ion of Au, has a geometry quite similar to that of neutral Auh, and supporting the pic.ture of the resonances as weakly bound “surfa...

Synaptic mechanisms of plasticity are calcium-dependent processes that are affected by dysfunction of mitochondrial calcium buffering. Recently, we observed that mice deficient in mitochondrial voltage-dependent anion channels, the outer component of the mitochondrial permeability transition pore, have impairments in learning and hippocampal synaptic plasticity, suggesting that the mitochondria...

Interest in the biologic role of trace elements prompted an investigation of their renal excretion. Preliminary qualitative analysis revealed that except for cobalt the entire first transition series of metals, namely, titanium, vanadium, chromium, manganese, iron, nickel and copper, were detectable in most human urines. In addition the heavier transition metals, molybdenum and silver, as well ...

The molecular arrangement and topography of ultrathin ionic liquids (ILs) on a silicon wafer have been studied by AFM and ARXPS, respectively. The results indicate a transition from an "anion-cation" layered (smooth) structure to a "drop-on-layer"/"sponge" (rough) structure when the film gets thicker, which can be attributed to the competition between solid/IL attraction and anion-cation cohesion.

High-resolution photoelectron spectra of the i-methylvinoxide anion are obtained by slow electron velocity-map imaging. The transitions between the anion ground electronic state, X̃ (1)A', and the radical X̃ (2)A'', and à (2)A' states are measured. Franck-Condon simulations of the X̃ (2)A'' ← X̃ (1)A' transition are performed to aid in assigning peaks, yielding several vibrational frequencies for t...

An overview is presented of the methodology and computations of nuclear shielding and spin–spin coupling constants of transition metal complexes. The presented material also includes an outline of relativistic approaches and their applications to heavy transition metals.

Complexes of 3\4\5\6!tetrahydro!4\6!dioxo!ð0\1\3Łtriazolo!ð0\4!aŁ pyrimidine "H1tpO1# with the divalent transition metals of the _rst transition series from Mn to Zn have been synthesized and characterized\ their general formula being M"HtpO1#1 = nH1O[ The crystal structure of the manganese compound\ ðMn"HtpO1#1"H1O#1Ł\ has been solved by single crystal X!ray di}raction\ showing that the ligand...

Merging photoredox and catalysis by transition metals, coined as metallaphotoredox catalysis, proved to be an excellent new platform for the development of synthetic strategies formation carbon–carbon carbon-heteroatom bonds. Herein, we report a dual catalytic system that has been successfully developed azide-alkyne ligation process yield 1,4-disubstituted-1,2,3-triazoles. It consists merging d...