Stepwise reduction of 9,10-bis(dimesitylboryl)anthracene afforded an radical anion and a dianion, accompanied by stepwise changes of the aromaticity of the anthracene moiety. The radical has a planar semiquinoidal structure, while the dianion has a puckered quinoidal structure. The alteration of the geometries of the 9,10-bis(dimesitylboryl)anthracene upon reduction is rationalized by the nature of the bonding. These results have been confirmed by cyclic voltammetry, X-ray crystallography, NMR, EPR, and UV-vis-NIR spectroscopy, as well as DFT calculations.

Crystal structure and magnetization behavior of double perovskite compounds Sr 2 FeMo 1−x O 6 (x = 0, 0.03, 0.04, 0.06) have been investigated using x-ray diffraction, Mössbauer spectroscopy and magnetization measurements. The proportion of Fe/Mo and the concentration of Mo vacancies determined by Rietveld methods and Mössbauer spectroscopy influence both the magnetic and magnetoresistive properties. An important fraction of the injected holes is localized at Mo sites, which is helpful for applications, because it promotes the occurrence of ordering between Fe and Mo cations. Both magnetic and Mössbauer spectroscopy data indicate that Mo hole doping strengthens the ferromagnetic interactions; moreover, 57 Fe Mössbauer spectroscopy revealed that the iron with one Mo vacancy existed inside regions of iron ions with one or two irons as first cation neighbors. A dramatic enhancement of the ferromagnetic order is due to the increased energy difference between the Fe and Mo sites.

Based on SMIC 0.18 μm standard CMOS technology, an input-powered vibrational energy harvesting interface circuit is proposed. It can be applied in energy harvesting devices for the extremely low voltage and high conversion rate. The simulation results show that the minimum input voltage could be as low as 0.15 V by utilizing bulk-driven technique. Correspondingly, the voltage conversion efficiency can reach up to 80%. And the power conversion efficiency is also 80% when voltage equals to 0.25 V. The proposed input-powered interface circuit, compared with the conventional output-powered circuits, can automatically shut down when the input voltage amplitude is low enough, thereby avoiding unnecessary energy loss.

Iron‐catalyzed cascade silyl radical addition/6‐exo‐trig cyclization/dearomatization of biaryl ynones has been developed. This approach uses silane as the precursor of silyl radical as well as silylation reagent, 1,10‐phenanthroline as the ligand, and tert‐butyl hydroperoxide (TBHP) as the oxidant. By employing this tandem process, a series of silylated spiro[5.5]trienones were prepared.

An approach to the vicinal oxyazidation of alkenes has been achieved under mild and transition metal-free conditions. This method utilizes NaN 3 as the azidation agent and 2,2,6,6tetramethylpiperidine-1-oxoammonium tetrafluoroborate (TEMPO + BF 4 À ) as the single-electron oxidant as well as the oxygen source. By using this protocol, various β-aminooxy azides were synthesized and several complex bioactive molecules were functionalized.