Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 108-47-4, Name is 2,4-Dimethylpyridine,introducing its new discovery., 108-47-4
Magnetic circular dichroism spectroscopy of zinc(II) tetraphenylporphyrin-ligand complexes: the effect of the axial ligand on spectral properties
The magnetic circular dichroism (MCD) spectra in the UV-visible spectral region (300-700 nm) of an extensive set of zinc tetraphenylporhyrin (ZnTPP) complexes with oxygen, nitrogen and sulfur donor axial ligands are reported.Because zinc porphyrins do not change oxidation or spin states and only bind one axial ligand, this study evaluates the effect of the axial ligand on the MCD spectral properties.The three types of axial ligand complexes can be discriminated by examination of the MCD band positions and intensities for the Sorel, beta and alpha transitions of each ZnTPP adduct.
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Reference£º
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis