Frontispiece: Weak Pnictogen Bond with Bismuth: Experimental Evidence Based on Bi−P Through‐Space Coupling

Abstract

Pnictogen bond with bismuth: The flexibility of accordion‐like molecular skeletons paves the way for tunable pnictogen bonding between phosphorus and bismuth centres. The strength of this weak and mainly electrostatic interaction between the Bi and P centres strongly depends on the halogen substituent on bismuth. The first‐ever observation of a coupling between the two nuclei 209Bi and 31P (and the first through‐space coupling involving bismuth) by solid‐state 31P NMR spectroscopy, reported in the Communication by Z. Benkő, D. Heift et al. on page 4017 ff., is a direct measure for the strength of the pnictogen bonding.