ABSTRACT
I. Introduction 221
II. Scope 222
III. Phosphonium Compounds 222 A. Synthesis 222 B. Applications 225
IV. Sulfonium Compounds 229 A. Synthesis 229 B. Applications 232
V. Sulfoxonium Compounds 235 A. Synthesis 235 B. Applications 235
VI. Arsonium Compounds 236
References 236
In the years since Linfield and Edwards reviewed non-nitrogen-containing cationic surfactants [1], the field of non-nitrogen "onium" chemistry has seen extensive growth. This has had relatively little impact in the area of cationic surfactants, which is still dominated by easily prepared, inexpensive nitrogen derivatives.
