Figure 5From: Synthesis and structural studies of a new class of quaternary ammonium salts, which are derivatives of cage adamanzane type aminal 1, 3, 6, 8-tetraazatricyclo[4.3.1.13,8]undecane (TATU)Electron density isosurface of 3b (with an isovalue of 0.02).Back to article page