21. Quaternary ammonium cations have four organic groups attached to the nitrogen atom. 22. Cyclization via electrophilic addition of the GGPP affords Iabdanyl cation . 23. The name of each substitution is prefixed to the hydride cation name. 24. Electrophilic reactions, like forming the tetraalkylammonium cation , difficult. 25. The second step leads to an oxocarbocation intermediate, the sialosyl cation . 26. Here the iodinating agent is the triiodine cation and the base is. 27. Ionophores selective for cations and anions have found many applications in analysis. 28. Following it in 1980, was a similar method for cation chromatography. 29. Dissolution occurs when the reduced cation is unstable in the solid material. 30. Like crown ethers, cyclen compounds are capable of selectively binding cations .
