Computational insights into the coupling mechanism of benzoic acid, phenoxy acetylene and dihydroisoquinoline catalyzed by silver ion as polarizer and stabilizer

Isomerization energies and surface electrostatic potential analyses on nitriles and isocyanides

Isocyanide-nitrile rearrangement has long been a continuing and interesting topic. A series of nitriles and isocyanides with the substituents of R = -AlH₂, -BeH, -BH₂, -C≡CH, -CF₃, -CH₃, -Cl, -C≡N, -COOH, -F, -H, Li, -MgH, -Na, -NH₂, -NO₂, -OH, -PH₂, -SH, -SiH₃, and -CH = CH₂ were investigated systematically based on full optimization at B3LYP-D3(BJ)/def2-QZVP level, and the isomerization energies from R-C≡N to:C = N-R were estimated. The substituent effect and bonding characters were analyzed by surface ESP colored van der Waals surfaces in conjunction with the global and local electrostatic extrema.