K x-ray satellite spectrum of Al by photon excitation

K x-ray satellite spectra of Al in the element and its oxide Al(2)O(3), generated by photon excitation, have been studied with a plane crystal spectrometer. The energies and relative intensities of the K(alpha) x-ray satellite and K(beta) low-energy satellite have been measured and compared with theoretical estimates. The results in the element and its oxide are compared to look for chemical effects

Expanding the Oxidative Chemistry of Organocopper Reagents: Facile Oxidative Cross-Coupling of Copper Acetylides with Arylboronic Acids

We have developed an efficient procedure for oxidative cross-coupling between arylboronic acids and alkynylcopper reagents. Upon simple addition of 1,10-phenanthroline in the presence of oxygen, these highly stable, readily available polymeric reagents are easily activated and transfer their alkynyl group after subsequent transmetallation with the boronic acid. These results further expand the oxidative chemistry of organocopper compounds together with providing a user-friendly entry to diaryl acetylenes.SCOPUS: ar.jinfo:eu-repo/semantics/publishe