Cu(II) complexes with anilido-imine ligands: Synthesis, characterization and catalysis on reverse atom transfer radical polymerization of styrene
摘要:
Several copper(II) complexes bearing bidentate anilido-imine ligands [(Ar ' N=CHC6H4-NAr)Cu](2)(mu-Cl)(2) (Ar = Ar ' = 2,6-Me2C6H3 (1a); Ar = Ar ' = 2,6-Et2C6H3 (1b); Ar = 3,5-(CF3)(2)C6H3, Ar ' = 2,6-(Pr2C6H3)-Pr-1 (1d); Ar = p-OMeC6H4, Ar ' = 2,6-(Pr2C6H3)-Pr-i (le)), (Ar ' N=CHC6H4-NAr)CuCI (Ar = Ar ' = 2,6-(Pr2C6H3)-Pr-i (1c)), and that bearing tridentate quinolinyl anilido-imine ligand (2,6-(i)pr(2)C(6)H(3)N=CHC6H4-NAr)CuCI (Ar = 8-quinolinyl (1f)) were synthesized via reactions of the corresponding ligands with (BuLi)-Bu-n and subsequent in-situ addition of CuCl2. The X-ray diffraction analysis revealed that la and ld are dinuclear, while 1f with N,N,N-tridentate ligand is in monomeric form. In the presence of 2,2 '-azobisisobutyronitrile (AIBN), these well-defined complexes showed moderate to high activities in reverse ATRP of styrene. High conversions up to 86.5% were obtained and polymers with controllable molecular weight and relatively narrow polydispersity were produced. (C) 2017 Elsevier Ltd. All rights reserved.
Synthesis of Ti, Zr, and Hf complexes with a new tetra-azane ligand by one-pot HCl-elimination and their properties as catalysts for production of UHMWPE
Iron(II) complexes bearing anilido-imine ligands: Synthesis and catalysis on ATRP of methyl methacrylate
作者:Zhiqiang Hao、Yuxi Han、Wei Gao、Lan Xin、Ying Mu
DOI:10.1016/j.poly.2014.08.003
日期:2014.11
Reactions of the ortho-C6H4(NHAr)-(CH=NAr) with (BuLi)-Bu-n and subsequent addition of FeCl2 afford the anilido-aldimine Fe(II) complexes [(ArN=CHC6H4-NAr)Fe](2)(mu-Cl)(2) (Ar = 2,6-Me2C6H3 (1a); Ar = 2,6-Et2C6H3 (1b)), and (ArN=CHC6H4-NAr)Fe(mu-Cl)(2)Li(THF)(2) (Ar = 2,6-(Pr2C6H3)-Pr-i (1c)). Similarly, reactions of the 2-(ArNC(H))C6H4-HNC6H6N with nBuLi and FeCl2 give the N,N,N-tridentate iron complexes [2-(ArNC(H))C6H4-NC6H6N]Fe}(2)(mu-Cl)(2) (Ar = 2,6-Me2C6H3 (2a), 2,6-Et2C6H3 (2b), and 2,6-(Pr2C6H3)-Pr-i (2c)). The X-ray diffraction analysis reveals that 1a and 1b are dimeric complexes and 1c is hetero-binuclear complex. Fe(II) atoms in these complexes are all in a distorted tetrahedral geometry. Complex 2c was confirmed to be a dimeric complex with the iron atom in a trigonal bipyramidal geometry. Complexes 1a-1c show moderate activities in ATRP of MMA in the presence of benzyl chloride (BnCI). While complexes 2a-2c are inert under the same condition. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis of Ti, Zr, and Hf complexes with a new tetra-azane ligand by one-pot HCl-elimination and their properties as catalysts for production of UHMWPE
作者:Xiangdong Ji、Wei Yao、Xuyang Luo、Wei Gao、Ying Mu
DOI:10.1039/c5nj02151k
日期:——
The first example for the HCl-elimination reaction being applied in the attachment of an amido-containing ligand to Zr and Hf.
HCl-消除反应的第一个例子是将含有氨基配体附着到锆和铪上。
Cu(II) complexes with anilido-imine ligands: Synthesis, characterization and catalysis on reverse atom transfer radical polymerization of styrene
作者:Zhiqiang Hao、Anjie Ma、Bin Xu、Wei Gao、Ying Mu
DOI:10.1016/j.poly.2017.01.018
日期:2017.4
Several copper(II) complexes bearing bidentate anilido-imine ligands [(Ar ' N=CHC6H4-NAr)Cu](2)(mu-Cl)(2) (Ar = Ar ' = 2,6-Me2C6H3 (1a); Ar = Ar ' = 2,6-Et2C6H3 (1b); Ar = 3,5-(CF3)(2)C6H3, Ar ' = 2,6-(Pr2C6H3)-Pr-1 (1d); Ar = p-OMeC6H4, Ar ' = 2,6-(Pr2C6H3)-Pr-i (le)), (Ar ' N=CHC6H4-NAr)CuCI (Ar = Ar ' = 2,6-(Pr2C6H3)-Pr-i (1c)), and that bearing tridentate quinolinyl anilido-imine ligand (2,6-(i)pr(2)C(6)H(3)N=CHC6H4-NAr)CuCI (Ar = 8-quinolinyl (1f)) were synthesized via reactions of the corresponding ligands with (BuLi)-Bu-n and subsequent in-situ addition of CuCl2. The X-ray diffraction analysis revealed that la and ld are dinuclear, while 1f with N,N,N-tridentate ligand is in monomeric form. In the presence of 2,2 '-azobisisobutyronitrile (AIBN), these well-defined complexes showed moderate to high activities in reverse ATRP of styrene. High conversions up to 86.5% were obtained and polymers with controllable molecular weight and relatively narrow polydispersity were produced. (C) 2017 Elsevier Ltd. All rights reserved.