SEARCH Articles Figures Tables C-N bond formation via hydrogen transfer C=N bonds hydrogenation Hydrogen-Bonded Pyridine N-Oxides Hydrogenation of C=N bonds N-H hydrogen-bond donors N-H- -O Hydrogen Bonds Persistence of N-H... S Hydrogen Bonding in Thiocarbamide Structures The N-H - X Hydrogen Bonding X-H- n hydrogen bond