Figure 1
From: Aqueous Solution Chemistry of Ammonium Cation in the Auger Time Window
Hydrogen-bond strengths of liquid water (blue, square symbols), ammonia (black, plus symbols) and ammonium (red, cross symbols) aqueous solutions. Two parameters characterize the hydrogen-bond strength: The N\(\cdots \)O distance (O\(\cdots \)O for water) and the N/O–H\(\cdots \)O angle. Panel (A) shows data for the strongest hydrogen bond (i.e., shortest) and panel (B) corresponds to the second-strongest hydrogen bond. The shaded areas indicate the parameter ranges typically considered for strong hydrogen bonding27.
