Group 13 compounds incorporating salen ligands

Th salen-group 13 chemistry that is known to provide guidance to other researchers is reviewed. There is little difference in the higher-coordinate compounds when compared to the four co-ordinate derivatives. Tremendous potential exists for catalysis and synthesis for the five-coordinate derivatives. The higher coordinate derivatives are rarely air or moisture sensitive. Reactions such as oxirane and lactide polymerizations are fairly well-known now, but the potential of these compounds has only begun to be developed.