Three 2-oxazolinyl rings on one quaternary carbon atom: preparation of a novel tripodal tris(oxazolinyl) ligand and the tetrameric molecular structure of its CuI complex
作者:Stéphane Bellemin-Laponnaz、Lutz H. Gade
DOI:10.1039/b202846h
日期:2002.5.30
Reaction of the lithium salt of 1,1-bis[2-(4,4-dimethyl)oxazolinyl]ethane (1) with 2-bromo-4,4-dimethyloxazoline yielded the novel tripodal ligand, 1,1,1-tris[2-(4,4-dimethyl)oxazolinyl]ethane (trisox-Me22) which was reacted with one mol equivalent of [Cu(NCCH3)4](BF4) in dichloromethane to give [Cu(trisox-Me2)]n(BF4)n (3); while monomeric in solution, an X-ray diffraction study of 3 established a cyclic, centrosymmetric tetramer in the solid state.
1,1-双[2-(4,4-二甲基)恶唑啉基]乙烷(1)的锂盐与2-溴-4,4-二甲基恶唑啉反应,产生了新型三足配体1,1,1-三[2-(4,4-二甲基)恶唑啉基]乙烷(trisox-Me22),后者与一摩尔等量的[Cu(NCCH3)4](BF4)在二氯甲烷中反应,得到[Cu(trisox-Me2)]n(BF4)n(3);虽然溶液中的单体,但3的X射线衍射研究确定了固态下的环状、中心对称四聚体。