ChemInform Abstract: The Ring-Stacking Principle in Organolithium Chemistry: Its Development Through the Isolation and Crystal Structures of Hexameric Iminolithium Clusters (RR′C=NLi)6 (R′: Ph, R: tBu or Me2N; R = R′: Me2N or tBu).
Abstract
The two new iminolithium compounds (Ia) and (Ib) are prepared by addition reactions of organolithium reagents to nitriles.
ChemInform Abstract
The two new iminolithium compounds (Ia) and (Ib) are prepared by addition reactions of organolithium reagents to nitriles. This preparation can also be applied to the previously reported derivatives (Ic). X-ray crystallographic data of the new compounds ((Ia): space group P1 Z : 2; (Ib): P1, Z=1) and a comparison of their structures with those of (Ic) show a hexameric cluster structure with electron-deficient bridging of Li3 triangles by imino ligands. Detailed analysis leads to a ring-stacking principle which envisages the formation of these hexameric structures from two slightly puckered trimeric rings brought together in a staggered arrangement.
