Synthesis of Heteroleptic Zinc Complexes Containing Aminoalkoxide and β-Diketonate Ligands

摘要

New heteroleptic complexes of zinc were designed and synthesized using aminoalkoxide and β-diketonate ligands. The complexes, [Zn(dmamp)(tmhd)]2 (1), [Zn(dmamp)(acac)]2 (2), [Zn(dmamp)(hfac)]2 (3), [Zn(dmamb)(tmhd)]2 (4), [Zn-(dmamb)(acac)]2 (5), and [Zn(dmamb)(hfac)]2 (6), were synthesized by controlled acid-base reactions between [EtZn (aminoalkoxide)]2 and β-diketonate ligands. Single crystal x-ray diffraction showed that complexes 14 and 6 exist as dimeric molecular structures with the zinc metal centers interconnected by the alkoxy oxygen atom via μ2-O bonding and their gemetries exhibit distorted trigonal bipyrimidal. TGA curves of complexes 3 and 6 showed sharp weight losses in a single step with very low residues, which confirmed the excellent vaporization and thermal stability.