Dedication
Dedicated to Professor Paul Knochel on the occasion of his 70th birthday.
Abstract
Hybrid guanidine ligands and their metal complexes are an important field of research
due to their diverse applications and highly modular structure. In this work, the
synthesis of four bench-stable iron(III) and zinc(II) complexes of two novel tridentate
guanidine-Schiff-base ligands is presented. Although the ligands themselves were found
to be unstable, the preparation of the stable metal complexes could be conducted on
a gram scale and in high yields (≥88%) without isolation of the corresponding unstable
ligand. All complexes were characterized by single-crystal X-ray diffraction, and
their structural features are discussed.
Keywords
Guanidine - Iron - Zinc - Schiff base - Imine - Tridentate ligands - Pincer
