Two tetraaryl-extended macrocycles were prepared from resorcin[4]arenes. The C2v-symmetric isomer afforded a new rigid cyclooctaphenylene cavitand following oxidative cyclodehydrogenation.

Tertiary phosphines remain widely utilized in synthesis, most notably as supporting ligands in metal complexes. A series of triarylphosphines bearing one to three hexa-peri-hexabenzocoronene (HBC) substituents has been prepared by an efficient divergent route. These "superphenylphosphines", P{HBC(t-Bu)}Ph (n = 1-3), form the palladium complexes PdClL and PdClL where the isomer distribution in solution is dependent on the number of HBC substituents. The crystalline structures of five complexes all show intramolecular π-stacking between HBC-phosphines to form a supramolecular bidentate-like ligand that distorts the metal coordination geometry. When n = 2 or 3, the additional HBC substituents engage in intermolecular π-stacking to assemble the complexes into continuous ribbons or sheets. The phosphines adopt HBC's characteristics including strong optical absorption, green emission, and redox activity.

The properties of N,N'-bis-(o-aminobenzylidene)-l,2-diaminoethanato-cobalt(II) and nickel(II) and various derivatives are described. The formation of stable cobalt-carbon o-bonds is discussed in terms of the energies of dzz and dxy orbitals.