作者:Feng Luo、Robin L. Webb、Craig Kelly、Marion L. Mino、Brian Woodworth、Elliott L. Blinn
DOI:10.1016/0020-1693(95)04486-s
日期:1995.6
On the basis of spectral data it is concluded that steric factors influence the ligand field strength more than the size of the macrocycle for macrocycles that do not bond in a planar manner to the nickel(II). However, for square planar complexes both the size of the macrocyclic ligand and the steric factors play significant roles in the ligand field strength. The equilibrium between the high spin
摘要已获得有关四氮杂大环的环大小,空间因素和配位方式将如何影响大环的场强以及这些参数如何影响水或五配位镍之间的水或乙醇混合物中的平衡的信息。 (II)含有大环的R 4 [12] aneN 4,其中R是CH 3和CH 2 C 6 H 5,和平面的[Ni(R 4 [12] aneN 4)] 2+配合物。根据光谱数据得出的结论是,对于没有以平面方式键合到镍(II)上的大环,空间因素对配体场强的影响大于大环的大小。但是,对于正方形平面络合物,大环配体的尺寸和位阻因素在配体场强中都起着重要作用。高自旋,五坐标,[Ni(R 4 [12] aneN 4)H 2 O] 2+络合物和平面或近乎平面的[Ni(R 4 [12] aneN 4)] 2+由这些络合物的溶剂化性质决定。R基团上的碳原子越多,上述平衡的K,ΔS和ΔH值越大。在过量氯离子的存在下,[Ni(Me 4 [12] aneN 4)H 2 O] 2+被转化为[Ni(Me