The terphspan scaffold was employed to support a bis(N-heterocyclic carbene) ligand () that provides a m-terphenyl canopy over one side of its metal complexes. Single-crystal X-ray diffraction studies on a silver complex of {[Ag()]AgBr(2)}(2) revealed an unusual tetranuclear silver core with a Ag-Ag bond distance of 3.0241(8) A with as a trans-chelating ligand (C-Ag-C = 171 degrees ). A preliminary X-ray structure of pseudo-square planar [PdCl(2)()] showed a similar binding mode of (C-Pd-C = 177 degrees ). High yields were obtained in Suzuki-Miyaura coupling reactions utilizing [PdCl(2)()] as the procatalyst and the results were compared with analogous complexes of trans-spanning diphosphine () and diphosphinite () complexes. The diphosphinite complex, [PdCl(2)()], decomposes to [mu-ClPd(PPh(2)OH)(PPh(2)O)](2) at room temperature.

A dinucleating ligand {1,3-bis[2-(di-2-picolylaminomethyl)-phenyl]benzene, L2} built on a m-terphenyl scaffold was prepared. The dissociation constants for the dizinc complex of L2 (Zn 2 L2) binding to phosphate, pyrophosphate and commercially available complexometric indicators were determined under physiological pH [10 mM N-(2-hydroxyethyl)piperazine-NЈ-2-ethanesulfonic acid (HEPES) buffer at pH 7.4]. Colorimetric and fluorescence-based indicator displacement

The cover picture shows a dizinc phosphohydrolase model built on a m‐terphenyl scaffold that binds pyrophosphate with concomitant displacement of complexometric indicators; this leads to dramatic color changes that can be detected visually and quantified spectroscopically. Details are discussed in the article by R. C. Smith et al. on p. 343 ff.