Alkylidenes or organoimido ligands which form complexes with alkaline‐earth (Ae) metals play a major role in organometallic chemistry. Substantial progress in the respective field of divalent Ae chemistry has recently been made, which was triggered ...
Alkylidenes or organoimido ligands which form complexes with alkaline‐earth (Ae) metals play a major role in organometallic chemistry. Substantial progress in the respective field of divalent Ae chemistry has recently been made, which was triggered by new synthesis strategies involving new AeII precursors and tailor‐made ligands. Dianionic alkylidene, organoimido, silylene, and phosphandiido ligands ideally charge‐balance alkaline‐earth metal cations but the pursuit of discrete low‐molecular species remains extremely challenging. The Minireview by R. Anwander and B. M. Wolf on page 8190 ff. focusses on the synthesis and reactivity of well‐defined Group 2 alkylidenes, organoimides, silylenes, and phosphandiides.