Anomeric effect for a 2,5,7‐triazabicyclo[2.2.1]heptane derivative

A new member of the polyazapolycyclic family of compounds, namely N³,N⁶,2,5,7‐pentaphenyl‐2,5,7‐triazabicyclo2.2.1]heptane‐3,6‐diamine xylene solvate, C₃₄H₃₁N₅·C₈H₁₀, was synthesized for the first time and the crystal structure is reported. There are no hydrogen bonds joining the molecules. All four chiral C atoms have the same absolute configurations. With regard to the four N—C—N groups, anomeric effects are observed to cause a reduction of C—N bond length and N‐atom pyramidality.