Visible and UV light spectra display striking differences in optical reflectivity for the two types of monatomic steps on copper (111) surfaces. Electronic structure calculations trace these differences to the specific contributions of p(axially) and p(radially) local densities of states, parallel and perpendicular to the steps, of the distinctly coordinated corner atoms. The local origin of th...

•Enantiotopic differentiation of dinitrile to all-carbon quaternary centers•Atom economic synthesis enantioenriched densely substituted pyridines•Zinc-promoted hetero-cyclometallation nickel with alkyne and nitrile•Broad scope, good enantioselectivity, excellent regioselectivity Pyridines are among the most significant heterocycles not only prevalently found in pharmaceuticals, natural products...

Herein, we report the synthesis and investigation of a substituted [10]cycloparaphenylene (CPP) incorporating diethylphthalane unit. An efficient strategy relying on symmetric built-up starting with propargyl ether as [2+2+2] cycloaddition precursor was developed. The straightforward required overcoming unexpected obstacles within cycloaddition, protection aromatization. These results give valu...

The growth of multi-layer NaCl islands on Au(111)-(22× √ 3) surfaces was investigated using scanning tunneling microscopy (STM). We observed that the aspect of the NaCl islands drastically differs depending on the tunneling conditions. It is therefore possible to observe the layers forming an NaCl island or to image the gold reconstruction below the first NaCl layer. Atomically resolved STM ima...

2+2] and [4+2] cycloaddition reactions of 1,3-cyclohexadiene on the Si(001) surface were studied. It is shown that not only the [4+2] cycloaddition reaction but also the [2+2] cycloadditions can occur on the Si(001) surface. Surface isomerization reactions connecting [4+2] and [2+2] are very unlikely due to a high energy barrier, implying that the surface reactions are kinetically controlled. T...