Yield: 5.0 g (58 %). 1 The calculated values of the elemental analysis and the experimental results differ for some of the synthesized compounds. The bromide and iodide derivatives of DABCO are strong hydroscopic and this may lead to the observed differences. However, even the results from elemental analysis of DABCO itself show differences between calculated and experimental values: C6H12N2: Calc.: C, 64.24; H, 10.78; N, 24.97. Exp.: C, 58.55; H, 10.58; N, 22.21. However, a definitive characterisation of the synthesized compounds is possible from 1 H-NMR and mass spectrometry. Afterwards the solid is separated and washed twice with each 5 ml acetone and dried under vacuum.