Cooperativity effects of H-bonding and charge transfer in an L-nitroarginine crystal with Z′ > 1

Detailed analysis of the charge density distribution function in the crystal of L-nitroarginine with two crystallographycally distinct molecules using Richard Bader's 'Atoms in Molecules' theory demonstrated the strengthening of hydrogen bonds owing to cooperativity effects and revealed the role of H-bonding in charge transfer in a structurally frustrated system.