Synthses and characterization of Zr-1,2,3 complexes; [Zr(N-alkoxy-beta-ketoiminate)(beta-diketonate)(OR)]

초록

Zr-1,2,3 complexes; [Zr(N-alkoxy-beta-ketoiminate)(beta-diketonate)(OR)](1,2,3 complexes means ones with mono, bi, terdentate ligands) have been invetigated. A series of dimeric [Zr(beta-diketonate)(Oi-Pr)3]2 were prepared by the reaction between [Zr(OiPr)4(HO-iPr)] and beta-diketone such as 2,2,6,6-tetramethyl-3,5-heptanedione(tmhd), while corresponding [Zr(N-alkoxy-beta-ketoiminate)(beta-diketonate)(OR)] was synthesized from the reaction between [Zr(beta-diketonate)(Oi-Pr)3]2 and terdentate N-alkoxy-beta-ketoimine (R1C(O)CHC(NHCHR3CHR4OH)R2) at low temperature. These 1,2,3-complexes were unstable in solution, while they are stable in the isolated white solid forms. These complexes were characterized by 1H, 13C-NMR, TGA and elemental analysis.