- 作者: 黃瑞賢
- 作者服務機構: Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058, R.O.C.
- 中文摘要: Treatment of GaCl3 with one equiv of Li[NC4H3(CH2NMe2)-2] (n = 1, 2, 3) in diethyl ether at -78 °C yields GaCl3-n[NC4H3(CH2NMe2)-2]n (n = 1, 1; n = 2, 2; n = 3, 3). Compound 1 reacts with two equiv of Rli to afford GaR2[NC4H3(CH2NMe2)-2] (4a, R=Me; 4b, R=Bu) via transmetallation. Reacting 2 with one equiv of Rli in diethyl ether, 3 and 4 are formed via ligand redistribution. Variable temperature 1H NMR spectroscopic experiments reveal that the five-coordinate gallium compound 3 is fluxional and results in a coalescence temperature at 5 °C, at which DG1 is calculated at ca. 10.4 Kcal/mole. All the new compounds have been characterized by 1H and 13C NMR spectroscopy and the structures of compounds 3 and 4a have also been determined by X-ray crystallography.
- 英文摘要: --
- 中文關鍵字: Gallium; Bidentate; Pyrrole; N ligand
- 英文關鍵字: Gallium; Bidentate; Pyrrole; N ligand