In this issue, Z. Chen, the late P. v. R. Schleyer, et al. review the chemistry of planar hypercoordinate compounds. What has driven the evolution and rapid growth of the field over the last four and a half decades? In a Minireview, Y. Lu et al. discuss protecting-group strategies for catalytic silylations of alcohols. The Highlights deal with solid-state NMR spectroscopy of carbenium ions (G. Buntkowsky and T. Gutmann) and rapid charging of Al- and Li-ion batteries (S. Lee and J. Cho).

In the Communications section, M. G. Organ et al. report on cross-coupling of secondary alkyl zinc reagents to five-membered heterocycles (see picture). A. Salonen et al. describe the precipitation of sodium dodecyl sulfate to create ultrastable and stimulable foams. K. O. Christie at al. succeeded in the synthesis of molybdenum(VI) and tungsten(VI) oxoazides and J. C. M. van Hest et al. observed reversibly triggered protein–ligand assemblies in giant vesicles.

• Angewandte Chemie 33/2015: A Long and Rich History,
  Angew. Chem. Int. Ed. 2015, 54 (33).