- 作者: 陳存仁、吳英彥、陳志德、王如春
- 作者服務機構: Department of Electrical Engineering, Yung-Ta Institute of Technology, Ping-Tung, Taiwan, R.O.C.
- 中文摘要: The complex, bis[N-6-aminopyridyl-N-(1S)-(+)-10-camphorsulfonylamino]palladium, Pd[(S)-APCS]2, 1, was prepared by reaction of 2-[(1S)-(+)-10-camphorsulfonamino]-6-aminopyridine with PdCl2 in THF. Complex 1 has been characterized by spectroscopic methods and its structure has been determined by X-ray crystallography. Crystal data: space group C2, a = 16.082 (2), b = 17.104 (2), c = 13.051 (2) A, β = 99.95 (1)°, V = 3535.9 (8) A3, Z = 2 with final residuals R1 = 0.0491 and wR2 = 0.0944. Two independent molecules, (S,S)-Pd[(S)-APCS]2, 1a, and (R,R)-Pd[(S)-APCS]2, 1b, were found in each asymmetric unit, which exchange to each other via a series of nitrogen inversion and C-C bond rotation. The inversion energy (ΔGc11) and the energy barrier (ΔGc21) were 11.5 ± 0.1 Kcal mol-1 at 246 K and 9.8 ± 0.1 Kcal mol-1 at 199 K, respectively, calculated by dynamic NMR data.
- 英文摘要: --
- 中文關鍵字: Dynamic NMR; X-ray crystallography; Diastereomerization; Nitrogen inversion.
- 英文關鍵字: --