Synthesis and characterization of gallium complexes bearing 4-alkyl-2,6-bis(aryliminomethylene)-phenol ligands; crystal structure of dimethyl[4-methyl-2,6-bis-(p-methylphenyliminomethylene)-phenolato]gallium
摘要:
Eight new dimethylgallium complexes bearing 4-alkyl-2.6-bis(aryliminomethlene))-phenol ligands of type Me2GaL (L = 4-methyl-2, 6-bis-(phenyliminomethylene)-phenolato (3); L = 4-methyl-2,6-bis-(p-methylphenyliminomethylene)-phejiolato (4); L = 4-methyl-2,6-bis-(1-naphthyliminomethylene)- phenolato (5); L = 4-methyl-2,6-bis-(2-chlorophenyliminomethylene)-phenolato (6); 4-tert-butyl-2,6-bis(phenyliminomethylene)-phenolato (7); L = 4-tert-butyl-2.6-bis-)-methylphenyliminomethylene)-phenolato (8); L = 4-tert-butyl-2,6bis-(1-naphthyliminomethylene)-phenolato (9); and L = 4-tert-butyl-2,6-bis-(2-chlorophenyliminomethylene)-phenolato](3) have been synthesized by the reaction of trimethylgallium with appropriate phenol. The complexes obtained have been characterized by elemental analysis, 'H NMR, IR and mass spectroscopy, respectively. The solid-state structures of dimethyl[4-methyl-2,6-bis-(p-methylphenyliminomethylene)-phenolato]gallium (4) have been determined by X-ray single crystal analysis. In the structure, Ga atom is coordinated by one nitrogen atom and the other nitrogen atom remains constant. The distorted tetrahedron geometry around gallium is presented. (c) 2006 Elsevier B.V. All rights reserved.
作者:Wenxue Yang、Ke-Qing Zhao、Bi-Qin Wang、Carl Redshaw、Mark R. J. Elsegood、Jiang-Lin Zhao、Takehiko Yamato
DOI:10.1039/c5dt03453a
日期:——
Products resulting from the reaction of MnCl2 with [2 + 2] Schiff-base macrocycles have been structurally characterized, and were found to be poorly active for the ROP of ε-caprolactone.