Divergent coordination mode of magnesium and zinc alkyls supported by the bifunctional pyrrolylaldiminato ligand

摘要

The first magnesium and zinc alkyls derived from N-(iso-propyl)-pyrrolylaldimine have been synthesised and structurally characterised:both ~tBuM(N,N')-type compounds exist as three-coordinate monomers in benzene solution,but in the solid state the magnesium complex is a centrosymmetric dimer with Mg_2(mu-N)_2 bridges,whereas the zinc complex is a Zn…pi bonded dimer with a pi-coordinated pyrrole unit.