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

摘要

New heteroleptic complexes of zinc were designed and synthesized using aminoalkoxide and beta-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 beta-diketonate ligands. Single crystal x-ray diffraction showed that complexes 1-4 and 6 exist as dimeric molecular structures with the zinc metal centers interconnected by the alkoxy oxygen atom via mu(2)-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.