Nitrophosphorene: A 2D Semiconductor with Both Large Direct Gap and Superior Mobility

A new two-dimensional phosphorus nitride monolayer (<i>P</i>2₁/<i>c</i>-PN) with distinct structural and electronic properties is predicted based on first-principle calculations. Unlike pristine single-atom group V monolayers such as nitrogene, phosphorene, arsenene, and antimonene, <i>P</i>2₁/<i>c</i>-PN has an intrinsic direct band gap of 2.77 eV that is very robust against the strains. Strikingly, <i>P</i>2₁/<i>c</i>-PN shows excellent anisotropic carrier mobility up to 290 829.81 cm² V^–1 s^–1 along the <i>a</i> direction, which is about 18 times that in monolayer black phosphorus. This put <i>P</i>2₁/<i>c</i>-PN way above the general relation that carrier mobility is inversely proportional to bandgap, making it a very unique two-dimensional material for nanoelectronics devices

Platinum(II)-Catalyzed Asymmetric Ring-Opening Addition of Arylboronic Acids to Oxabenzonorbornadienes

A new platinum­(II)-catalyzed asymmetric ring-opening addition of arylboronic acids to oxabenzonorbornadienes was developed, which afforded the corresponding <i>cis</i>-2-aryl-1,2-dihydronaphthalen-1-ol products in high yields (up to 97%) with moderate to good enantioselectivities (up to 89% ee) under very mild conditions. The effects of various ligands, catalyst loading, bases, solvents, and temperatures on the yield and enantioselectivity of the reaction were also investigated. The cis configuration of product <b>2m</b> was confirmed by X-ray diffraction analysis. A potential mechanism for the present catalytic reaction is proposed

Platinum(II)-Catalyzed Asymmetric Ring-Opening Addition of Arylboronic Acids to Oxabenzonorbornadienes

A new platinum­(II)-catalyzed asymmetric ring-opening addition of arylboronic acids to oxabenzonorbornadienes was developed, which afforded the corresponding <i>cis</i>-2-aryl-1,2-dihydronaphthalen-1-ol products in high yields (up to 97%) with moderate to good enantioselectivities (up to 89% ee) under very mild conditions. The effects of various ligands, catalyst loading, bases, solvents, and temperatures on the yield and enantioselectivity of the reaction were also investigated. The cis configuration of product <b>2m</b> was confirmed by X-ray diffraction analysis. A potential mechanism for the present catalytic reaction is proposed