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核磁共振光谱是研究配合物结构和反应的强有力的工具。直到最近,大多是用~1H 而少数用~(19)FNMR。在此我们希望通过~(19)FNMR 研究一些典型的含氟配合物的结构和反应,增进对配位化学的一般理论了解并探索新的规律,实验结果表明这一目标可以达到。经选择合成了4-氟2,2′-联吡啶(fbpy)和(fbpy)_3Co(Ⅱ),Co(Ⅲ),Ni(Ⅱ),从~(19)FNMR得知后者是八面体结构,在溶液中有面式和径式两种几何异构体存在,面式:径式=1:3.用~(19)FNMR 研究 fbpy,bpy 的 Co(Ⅱ),Co(Ⅲ),Fe(Ⅱ),Fe(Ⅲ)配合物的配体交换反应,方便又定量得到交换数据。本文报道(fbpy)_3Fe(Ⅱ),Fe(Ⅲ)-(a),
Nuclear magnetic resonance spectroscopy is a powerful tool for studying the structure and reaction of complexes. Until recently, most used ~ 1H and few used ~ (19) FNMR. Here, we hope to study the structure and reaction of some typical fluorine-containing complexes by ~ (19) FNMR to improve the general theory of coordination chemistry and explore new rules. The experimental results show that this goal can be achieved. (Fbpy) _3Co (Ⅱ), Co (Ⅲ) and Ni (Ⅱ) have been synthesized and synthesized. The results show that the latter is an octahedral structure from ~ (19) FNMR In the solution, there are two kinds of geometrical isomers of surface and radial exist, surface type: radial type = 1: 3. The ~ (19) FNMR study of fbpy, bpy the Co (Ⅱ), Fe (Ⅲ) ligand exchange reaction, convenient and quantitative exchange data obtained. In this paper, (fbpy) _3Fe (Ⅱ), Fe (Ⅲ) - (a),